ISEE Word Problems Question 158: Answer and Explanation

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Question: 158

5. (–2x²y³)⁴ =

A. –16x⁸y¹²
B. –16x⁶y⁷
C. 16x⁶y⁷
D. 16x⁸y¹²

Correct Answer: D

Explanation:

The answer is D

Follow the rules of exponents. The power applies to all terms inside the parentheses. A negative base raised to an even power like 4 produces a positive result, in this case 16. When an exponential term is raised to a power, multiply the exponents. (x²)⁴ = x⁸ and (y³)⁴ = y¹².

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