Question

a/b - a²-b²/b² : a+b/b​

Answer 1

Ответ:

$\frac{a}{b} - \frac{(a - b)(a + b)}{ {b }^{2} } \times \frac{b}{a + b} = \frac{a}{b} - \frac{a - b}{b} = \frac{a - a + b}{b} = \frac{b}{b} = 1$