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

Simplify the following equation:

\( 5^3\times2^4\times5^2\times2^3= \)

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:

13= 1^3=

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

Video Solution
Exercise #3

Solve the following problem:

70= 7^0=

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

Video Solution
Exercise #4

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

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

Video Solution
Exercise #5

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

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

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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