#### Answer

$3x^2$

#### Work Step by Step

$\lim\limits_{h \to 0}\frac{(x+h)^3-x^3}{h}=\lim\limits_{h \to 0}\frac{x^3+3x^2h+3xh^2+h^3-x^3}{h}=\lim\limits_{h \to 0}3x^2+3xh+h^2=3x^2+3x(0)+(0)^2=3x^2$

Published by
Cengage

ISBN 10:
1285740629

ISBN 13:
978-1-28574-062-1

$3x^2$

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