Question

Упростить выражение, дробь

Answer 1

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Answer 2

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