Examples with solutions for Applying Combined Exponents Rules: A power law

Exercise #1

1120=? 112^0=\text{?}

Video Solution

Step-by-Step Solution

We use the zero exponent rule.

X0=1 X^0=1 We obtain

1120=1 112^0=1 Therefore, the correct answer is option C.

Answer

1

Exercise #2

Solve the following problem:

13= 1^3=

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the given information

  • Step 2: Apply the appropriate exponent rule

  • Step 3: Perform the calculation

Now, let's work through each step:
Step 1: The problem gives us the expression 13 1^3 . This means we have a base of 1 and an exponent of 3.
Step 2: We'll use the exponentiation rule, which states that an=a×a××a a^n = a \times a \times \ldots \times a (n times).
Step 3: Since our base is 1, raising 1 to any power will still result in 1. Therefore, we can express this as 1×1×1=1 1 \times 1 \times 1 = 1 .

Therefore, the solution to 13 1^3 is 1 1 .

Answer

1 1

Exercise #3

Solve the following problem:

70= 7^0=

Video Solution

Step-by-Step Solution

To solve the problem of finding 70 7^0 , we will follow these steps:

  • Step 1: Identify the general rule for exponents with zero.

  • Step 2: Apply the rule to the given problem.

  • Step 3: Consider the provided answer choices and select the correct one.

Now, let's work through each step:

Step 1: A fundamental rule in exponents is that any non-zero number raised to the power of zero is equal to one. This can be expressed as: a0=1 a^0 = 1 where a a is not zero.

Step 2: Apply this rule to the problem: Since we have 70 7^0 , and 7 7 is certainly a non-zero number, the expression evaluates to 1. Therefore, 70=1 7^0 = 1 .

Therefore, the solution to the problem is 70=1 7^0 = 1 , which corresponds to choice 2.

Answer

1 1

Exercise #4

2423= \frac{2^4}{2^3}=

Video Solution

Step-by-Step Solution

Let's keep in mind that the numerator and denominator of the fraction have terms with the same base, therefore we use the property of powers to divide between terms with the same base:

bmbn=bmn \frac{b^m}{b^n}=b^{m-n}

We apply it in the problem:

2423=243=21 \frac{2^4}{2^3}=2^{4-3}=2^1

Remember that any number raised to the 1st power is equal to the number itself, meaning that:

b1=b b^1=b

Therefore, in the problem we obtain:

21=2 2^1=2

Therefore, the correct answer is option a.

Answer

2 2

Exercise #5

3532= \frac{3^5}{3^2}=

Video Solution

Step-by-Step Solution

Using the quotient rule for exponents: aman=amn \frac{a^m}{a^n} = a^{m-n} .

Here, we have 3532=352 \frac{3^5}{3^2} = 3^{5-2}

Simplifying, we get 33 3^3

Answer

33 3^3

Exercise #6

Reduce the following equation:

(32)4×(53)5= \left(3^2\right)^4\times\left(5^3\right)^5=

Video Solution

Step-by-Step Solution

To solve this problem, we'll employ the power of a power rule in exponents, which states that (am)n=am×n(a^m)^n = a^{m \times n}.

Let's apply this rule to each part of the expression:

  • Step 1: Simplify (32)4(3^2)^4
    According to the power of a power rule, this becomes 32×4=383^{2 \times 4} = 3^8.

  • Step 2: Simplify (53)5(5^3)^5
    Similarly, apply the rule here to get 53×5=5155^{3 \times 5} = 5^{15}.

After simplifying both parts, we multiply the results:

38×5153^8 \times 5^{15}

Thus, the reduced expression is 38×515\boxed{3^8 \times 5^{15}}.

Answer

38×515 3^8\times5^{15}

Exercise #7

Solve the following problem:

(34)×(32)= \left(3^4\right)\times\left(3^2\right)=

Video Solution

Step-by-Step Solution

In order to solve this problem, we'll follow these steps:

  • Step 1: Identify the base and exponents

  • Step 2: Use the formula for multiplying powers with the same base

  • Step 3: Simplify the expression by applying the relevant exponent rule

Now, let's work through each step:

Step 1: The given expression is (34)×(32) (3^4) \times (3^2) . Here, the base is 3, and the exponents are 4 and 2.

Step 2: Apply the exponent rule, which states that when multiplying powers with the same base, we add the exponents:
am×an=am+n a^m \times a^n = a^{m+n}

Step 3: Using the rule identified in Step 2, we add the exponents 4 and 2:
34×32=34+2=36 3^4 \times 3^2 = 3^{4+2} = 3^6

Therefore, the simplified form of the expression is 36 3^6 .

Answer

36 3^6

Exercise #8

Solve the following problem:

(3)0= \left(-3\right)^0=

Video Solution

Step-by-Step Solution

To solve this problem, let's follow these steps:

  • Understand the zero exponent rule.

  • Apply this rule to the given expression.

  • Identify the correct answer from the given options.

According to the rule of exponents, any non-zero number raised to the power of zero is equal to 11. This is one of the fundamental properties of exponents.
Now, apply this rule:

Step 1: We are given the expression (3)0(-3)^0.
Step 2: Here, 3-3 is our base. We apply the zero exponent rule, which tells us that (3)0=1(-3)^0 = 1.

Therefore, the value of (3)0(-3)^0 is 11.

Answer

1 1

Exercise #9

(35)4= (3^5)^4=

Video Solution

Step-by-Step Solution

To solve the exercise we use the power property:(an)m=anm (a^n)^m=a^{n\cdot m}

We use the property with our exercise and solve:

(35)4=35×4=320 (3^5)^4=3^{5\times4}=3^{20}

Answer

320 3^{20}

Exercise #10

Simplify the following equation:

42×35×43×32= 4^2\times3^5\times4^3\times3^2=

Video Solution

Step-by-Step Solution

To simplify the given expression 42×35×43×32 4^2 \times 3^5 \times 4^3 \times 3^2 , we will follow these steps:

  • Step 1: Identify and group similar bases.

  • Step 2: Apply the rule for multiplying like bases.

  • Step 3: Simplify the expression.

Now, let's go through each step thoroughly:

Step 1: Identify and group similar bases:
We see two distinct bases here: 4 and 3.

Step 2: Apply the rule for multiplying like bases:
For base 4: Combine 424^2 and 434^3, using the rule am×an=am+na^m \times a^n = a^{m+n}.

Add the exponents for base 4: 2+3=5 2 + 3 = 5 , thus, 42×43=45 4^2 \times 4^3 = 4^5 .

For base 3: Combine 353^5 and 323^2, still using the same exponent rule.

Add the exponents for base 3: 5+2=7 5 + 2 = 7 , resulting in 35×32=37 3^5 \times 3^2 = 3^7 .

Step 3: Simplify the expression:
The simplified expression is 45×37 4^5 \times 3^7 .

Therefore, the final simplified expression is 45×37 4^5 \times 3^7 .

Answer

45×37 4^5\times3^7

Exercise #11

Simplify the following equation:

47×53×42×54= 4^7\times5^3\times4^2\times5^4=

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify and group the terms with the same base.

  • Step 2: Apply the laws of exponents to simplify by adding the exponents of each base.

  • Step 3: Write the simplified form.

Let's work through each step:

Step 1: We are given that 47×53×42×54 4^7 \times 5^3 \times 4^2 \times 5^4 .

Step 2: First, group the terms with the same base:

47×42 4^7 \times 4^2 and 53×54 5^3 \times 5^4 .

Step 3: Use the law of exponents, which states am×an=am+n a^m \times a^n = a^{m+n} .

For the base 4: 47×42=47+2=49 4^7 \times 4^2 = 4^{7+2} = 4^9 .

For the base 5: 53×54=53+4=57 5^3 \times 5^4 = 5^{3+4} = 5^7 .

Therefore, the simplified form of the expression is 49×57 4^9 \times 5^7 .

Answer

49×57 4^9\times5^7

Exercise #12

5654= \frac{5^6}{5^4}=

Video Solution

Step-by-Step Solution

Using the quotient rule for exponents: aman=amn \frac{a^m}{a^n} = a^{m-n} .

Here, we have 5654=564 \frac{5^6}{5^4} = 5^{6-4} . Simplifying, we get 52 5^2 .

Answer

52 5^2

Exercise #13

Simplify the following equation:

53×24×52×23= 5^3\times2^4\times5^2\times2^3=

Video Solution

Step-by-Step Solution

Let's simplify the expression 53×24×52×23 5^3 \times 2^4 \times 5^2 \times 2^3 using the rules for exponents. We'll apply the product of powers rule, which states that when multiplying like bases, you can add the exponents.

  • Step 1: Focus on terms with the same base.
    Combine 53 5^3 and 52 5^2 . Since both terms have the base 55, we apply the rule am×an=am+na^m \times a^n = a^{m+n}: 53×52=53+2=55 5^3 \times 5^2 = 5^{3+2} = 5^5

  • Step 2: Combine 24 2^4 and 23 2^3 . Similarly, for the base 22: 24×23=24+3=27 2^4 \times 2^3 = 2^{4+3} = 2^7

After simplification, the expression becomes:
55×27 5^5 \times 2^7

Answer

55×27 5^5\times2^7

Exercise #14

Insert the corresponding expression:

6764= \frac{6^7}{6^4}=

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Identify the given information and relevant exponent rules.

  • Apply the quotient property of exponents.

  • Simplify the expression.

Now, let's work through each step:
Step 1: The problem gives us the expression 6764 \frac{6^7}{6^4} . The base is 6, and the exponents are 7 and 4, respectively.
Step 2: According to the rule of exponents, when dividing powers with the same base, we subtract the exponents: aman=amn \frac{a^m}{a^n} = a^{m-n} In this case, a=6 a = 6 , m=7 m = 7 , and n=4 n = 4 .
Step 3: Applying this rule gives us: 6764=674=63 \frac{6^7}{6^4} = 6^{7 - 4} = 6^3

Therefore, the solution to the problem is 63 6^3 .

Answer

63 6^3

Exercise #15

Simplify the following equation:

64×23×62×25= 6^4\times2^3\times6^2\times2^5=

Video Solution

Step-by-Step Solution

To simplify the equation 64×23×62×25 6^4 \times 2^3 \times 6^2 \times 2^5 , we will make use of the rules of exponents, specifically the product of powers rule, which states that when multiplying two powers that have the same base, you can add their exponents.

Step 1: Identify and group the terms with the same base.
In the expression 64×23×62×25 6^4 \times 2^3 \times 6^2 \times 2^5 , group the powers of 6 together and the powers of 2 together:

  • Powers of 6: 64×62 6^4 \times 6^2

  • Powers of 2: 23×25 2^3 \times 2^5

Step 2: Apply the product of powers rule.
According to the product of powers rule, for any real number a a , and integers m m and n n , the expression am×an=am+n a^m \times a^n = a^{m+n} .

Apply this rule to the powers of 6:
64×62=64+2=66 6^4 \times 6^2 = 6^{4+2} = 6^6 .

Apply this rule to the powers of 2:
23×25=23+5=28 2^3 \times 2^5 = 2^{3+5} = 2^8 .

Step 3: Write down the final expression.
Combining our results gives the simplified expression: 66×28 6^6 \times 2^8 .

Therefore, the solution to the problem is 66×28 6^6 \times 2^8 .

Answer

66×28 6^6\times2^8

Exercise #16

(62)13= (6^2)^{13}=

Video Solution

Step-by-Step Solution

We use the formula:

(an)m=an×m (a^n)^m=a^{n\times m}

Therefore, we obtain:

62×13=626 6^{2\times13}=6^{26}

Answer

626 6^{26}

Exercise #17

Simplify the following equation:

75×23×72×24= 7^5\times2^3\times7^2\times2^4=

Video Solution

Step-by-Step Solution

To solve this problem, we'll apply the laws of exponents to simplify the expression 75×23×72×24 7^5 \times 2^3 \times 7^2 \times 2^4 .

Let's follow these steps:

  • Step 1: Identify like bases.
    We have two like bases in the expression: 7 and 2.

  • Step 2: Apply the product of powers rule for each base separately.
    For the base 7: 75×72=75+2=77 7^5 \times 7^2 = 7^{5+2} = 7^7 .
    For the base 2: 23×24=23+4=27 2^3 \times 2^4 = 2^{3+4} = 2^7 .

  • Step 3: Combine the results.
    The expression simplifies to 77×27 7^7 \times 2^7 .

The simplified form of the original expression is therefore 77×27 7^7 \times 2^7 .

Answer

77×27 7^7\times2^7

Exercise #18

Simplify the following equation:

73×52×74×53= 7^3\times5^2\times7^4\times5^3=

Video Solution

Step-by-Step Solution

To solve this problem, we'll use the product of powers property which states am×an=am+n a^m \times a^n = a^{m+n} .

  • Step 1: Simplify the expression by grouping the like bases. The original expression is 73×52×74×53 7^3 \times 5^2 \times 7^4 \times 5^3 .

  • Step 2: Combine the exponents for each base. For base 7: 73×74=73+4=77 7^3 \times 7^4 = 7^{3+4} = 7^7 . For base 5: 52×53=52+3=55 5^2 \times 5^3 = 5^{2+3} = 5^5 .

  • Step 3: Write the simplified expression. After combining the exponents, the expression becomes 77×55 7^7 \times 5^5 .

Thus, the solution to the problem is 77×55 7^7 \times 5^5 .

Answer

77×55 7^7\times5^5

Exercise #19

9993= \frac{9^9}{9^3}=

Video Solution

Step-by-Step Solution

Note that in the fraction and its denominator, there are terms with the same base, so we will use the law of exponents for division between terms with the same base:

bmbn=bmn \frac{b^m}{b^n}=b^{m-n}

Let's apply it to the problem:

9993=993=96 \frac{9^9}{9^3}=9^{9-3}=9^6

Therefore, the correct answer is b.

Answer

96 9^6

Exercise #20

Insert the corresponding expression:

(92)4= \left(9^2\right)^4=

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the provided expression: (92)4(9^2)^4.

  • Step 2: Apply the power of a power rule for exponents.

  • Step 3: Simplify by multiplying the exponents.

Now, let's work through each step:

Step 1: We have the expression (92)4(9^2)^4.

Step 2: Using the power of a power rule ((am)n=amn(a^m)^n = a^{m \cdot n}), apply it to the expression:

(92)4=92×4 (9^2)^4 = 9^{2 \times 4}

Step 3: Simplify by calculating the product of the exponents:

2×4=8 2 \times 4 = 8

Therefore, (92)4=98(9^2)^4 = 9^8.

The correct expression corresponding to the given problem is 98\boxed{9^8}.

Answer

98 9^8