Question

Срочно надо, тема деление дробей

Answer 1

1)

$\frac{3ab}{a + b} \times \frac{ {a}^{2} + 2ab + {b}^{2} }{6ab} = \frac{ {(a + b)}^{2} }{2(a + b)} = \frac{a + b}{2}$

2)

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