Question

плиз хелп
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Answer 1

$\frac{2}{5x} + \frac{1}{5x} = \frac{2 + 1}{5x} = \frac{3}{5x}$

$\frac{2}{x - 2} - \frac{x}{ {x}^{2} - 4 } = \frac{2}{x - 2} - \frac{x}{(x - 2)(x + 2)} = \frac{2(x + 2)}{(x - 2)(x + 2)} - \frac{x}{(x - 2)(x + 2)} = \frac{2x + 4}{(x - 2)(x + 2)} - \frac{x}{(x - 2)(x + 2)} = \frac{2x + 4 - x}{(x - 2)(x + 2)} = \frac{x + 4}{ {x}^{2} - 4 }$