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Power rule (negative & fractional powers)

AP.CALC: FUN‑3 (EU), FUN‑3.A (LO), FUN‑3.A.1 (EK)

Problem

Let g, left parenthesis, x, right parenthesis, equals, x, start superscript, minus, 12, end superscript.
g, prime, left parenthesis, x, right parenthesis, equals
Stuck?
Stuck?