Question

Упростить выражение, дробь

Answer 1

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Answer 2

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