Advanced Math practice question

Answer: A. 4

(2x)⁻² = 1/(4x²) and (4x)² = 16x², so the product is 16x²/(4x²) = 4.

Why the other answers are wrong

B. 16

This forgets to divide by (2x)².

C. 4x²

The x² factors cancel.

D. 1/4

This inverts the correct answer.

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