Explain, in one or two sentences, why the expression can be rewritten as before…

MATHEMATICS · Subjective · AP · Calculus AB · Differentiation: Definition and Fundamental Properties · Differentiation: Definition and Fundamental Properties

Problem

Explain, in one or two sentences, why the expression (x+h)3−x3h\dfrac{(x+h)^3-x^3}{h} can be rewritten as 3x2+3xh+h23x^2+3xh+h^2 before taking the limit as h→0h\to 0.

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