Combined Exponent Rules Practice Problems & Solutions

Master all exponent properties together with step-by-step practice problems. Learn to apply multiplication, division, power of power, and negative exponent rules in complex expressions.

📚Master Complex Exponent Problems with Combined Rules
  • Apply multiple exponent properties in single expressions with confidence
  • Simplify complex expressions involving parentheses and negative exponents
  • Convert negative exponents to positive form using proper techniques
  • Combine fractions with different bases using exponent rules
  • Solve multi-step problems requiring power of power and quotient rules
  • Handle expressions with variables in both base and exponent positions

Understanding Applying Combined Exponents Rules

Complete explanation with examples

Taking advantage of all the properties of powers or laws of exponents

From time to time, we will come across exercises in which we must use all the properties of powers together.
As soon as you have the exercise, try to first get rid of the parentheses according to the properties of powers and then, apply these properties to the corresponding terms, one after the other.

All the properties of powers or laws of exponents are:
am×an=a(m+n)a^m\times a^n=a^{(m+n)}
aman=a(mn)\frac {a^m}{a^n} =a^{(m-n)}
(a×b)n=an×bn(a\times b)^n=a^n\times b^n
(ab)n=anbn(\frac {a}{b})^n=\frac {a^n}{b^n}
(an)m=a(nm)(a^n )^m=a^{(n*m)}
a0=1a^0=1
When a0a≠0
an=1ana^{-n}=\frac {1}{a^n}

Detailed explanation

Practice Applying Combined Exponents Rules

Test your knowledge with 44 quizzes

Reduce the following equation:

\( a^2\times a^5\times a^3= \)

Examples with solutions for Applying Combined Exponents Rules

Step-by-step solutions included
Exercise #1

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

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

Video Solution
Exercise #2

Solve the following problem:

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

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

Video Solution
Exercise #3

Reduce the following equation:

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

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}

Video Solution
Exercise #4

Simplify the following equation:

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

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

Video Solution
Exercise #5

Simplify the following equation:

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

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

Video Solution

Frequently Asked Questions

What order should I use when applying multiple exponent rules?

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Start with parentheses first, then apply power of power rules, followed by multiplication and division of same bases. Finally, convert negative exponents to positive form if required.

How do I handle expressions like (3/x)^-3 × (x^-2)^4?

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First apply the quotient power rule to (3/x)^-3, then use power of power for (x^-2)^4. Combine like bases using multiplication and division rules, then convert negative exponents to fractions.

What are all the exponent properties I need to know?

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The seven key properties are: 1) a^m × a^n = a^(m+n), 2) a^m ÷ a^n = a^(m-n), 3) (ab)^n = a^n × b^n, 4) (a/b)^n = a^n/b^n, 5) (a^m)^n = a^(mn), 6) a^0 = 1, 7) a^-n = 1/a^n.

Why do I get confused with negative exponents in complex problems?

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Negative exponents create reciprocals, which can make expressions look complicated. Practice converting a^-n = 1/a^n early in your solution, and remember that negative times negative equals positive when subtracting exponents.

How do I simplify (x^2)^-3 × x^5 ÷ x^-2?

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Step by step: (x^2)^-3 becomes x^-6, then x^-6 × x^5 = x^-1, finally x^-1 ÷ x^-2 = x^-1-(-2) = x^1 = x.

What's the difference between (2x)^3 and 2x^3?

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(2x)^3 = 2^3 × x^3 = 8x^3 because the parentheses mean both 2 and x are cubed. However, 2x^3 means only x is cubed, so it equals 2 × x^3.

Can I use exponent rules when bases are different?

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You can only combine exponents when bases are identical. For different bases like 2^3 × 3^3, you cannot simplify further unless you can rewrite one base in terms of the other (like 4^2 = (2^2)^2 = 2^4).

How do I check if my exponent simplification is correct?

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Substitute simple numbers for variables and calculate both the original expression and your simplified answer. If they match, your simplification is likely correct. Also verify that you've applied each rule properly in sequence.

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