For , define . Which set describes the domain of…

MATHEMATICS · Single correct · AP · Calculus AB · Differentiation: Definition and Fundamental Properties · Differentiation: Definition and Fundamental Properties

Problem

For x≠4x\ne4, define f(x)=(x−4)(x+2)x−4f(x)=\dfrac{(x-4)(x+2)}{x-4}. Which set describes the domain of f′(x)f'(x)? (a) All real numbers except −2-2 (b) All real numbers (c) All real numbers except 44 (d) All real numbers except 44 and −2-2

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