Answer
$$2\left(2x+h\right)$$
Work Step by Step
Simplifying the expression using the rules of Algebra, we find:
$$\frac{2\left(x+h\right)^2-2x^2}{h} \\ \frac{2h\left(2x+h\right)}{h} \\ 2\left(2x+h\right)$$
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