$$\frac { x ^ { 2 } - 49 } { x ^ { 2 } + 2 x } \times \frac { x + 2 } { x - 7 }$$
$\frac{x+7}{x}$
$$\frac{\left(x^{2}-49\right)\left(x+2\right)}{\left(x^{2}+2x\right)\left(x-7\right)}$$
$$\frac{\left(x-7\right)\left(x+2\right)\left(x+7\right)}{x\left(x-7\right)\left(x+2\right)}$$
$$\frac{x+7}{x}$$
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