Practice questions
- Simplify: (3x7y5)2 A. 9x7y5 B. 9x14y5 C. 9x7y10 D. 9x14y10
- Simplify: ((x5)7)9 A. x21 B. x22 C. x31 D. x315
Answers and explanations
- The correct answer is Choice (D).
To simplify expressions that contain exponents, raise everything in the parentheses by the exponent outside the parentheses. Technically, you'll apply the exponent rule, which says (ab)n = anbn. In this case,
- The correct answer is Choice (D).
Apply the exponent rule, which says
Multiply the exponents, beginning with the innermost parentheses:
Move on to the outer exponent: