SAT Math : How to subtract exponents

Study concepts, example questions & explanations for SAT Math

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Example Questions

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Example Question #101 : Exponential Operations

Evaluate: 

Possible Answers:

Correct answer:

Explanation:

When subtracting with exponents, we try to factor out some terms.

We can factor out  to get 

.

Example Question #111 : Exponents

Simplify: 

Possible Answers:

Correct answer:

Explanation:

Although we have different bases, we know that .

Therefore, 

.

Finally, we factor out  to get 

.

Example Question #12 : Exponents

If , then what is ?

Possible Answers:

Correct answer:

Explanation:

Follow the order of operations by solving the expression within the parentheses first.

Return to solve the original expression.

 

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