Multiple Choice

A technical documentation specialist is auditing a mathematical script used for engineering calculations. The script is simplifying the expression (5x−3)2(5x^{-3})^2 and has reached the intermediate stage of 25x−625x^{-6}. Before applying the definition of negative exponents to move the variable, the specialist must identify which part of this term is the base that the exponent −6-6 applies to. Which of the following is the correct base?

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Updated 2026-09-18

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