Question

ДОПОМОЖІТЬ СРОЧНООО, БУДЬ ЛАСКА
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Answer 1

$\frac{2}{a - b} - \frac{2a}{ {a}^{2} - {b}^{2} } = \frac{2}{a - b} - \frac{2a}{(a - b)(a + b)} = \frac{2(a + b) - 2a}{(a - b)(a + b)} = \frac{2a + 2b - 2a}{ {a}^{2} - {b}^{2} } = \frac{2b}{ {a}^{2} - {b}^{2} }$

$\frac{}{2a + 2b} + \frac{}{a + b} = \frac{}{2(a + b)}$

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

$\frac{}{ {a}^{2} - 2ab + {b}^{2} } + \frac{}{3a + 3b} = \frac{}{ {(a - b)}^{2} } + \frac{}{3(a - b)} = \frac{}{3 {(a - b)}^{2} }$