Question

Помогите срочно даю 20 балов!!! Задание 38,7-4,5,6,7,8 уравнение

Answer 1

$4) = \frac{8(b - a)(b + a)}{(b - a)(b - a)} = \frac{8(b + a)}{(b - a)} \\ 5) = \frac{ - 5x(y - x)}{ {x}^{3}(y - x) } = - \frac{5}{ {x}^{2} }$
$6) = \frac{7b(1 - 2b)}{ - 21b(1 - 2b)} = - \frac{1}{3} \\ 7) = \frac{3(1 - x)}{(1 - x)(1 - x)} = \frac{3}{1 - x}$
$8) = \frac{(b - 2)(b - 2)^{2}}{{(b - 2)}^{2} } = b - 2$