Question

Сократите дроби: 5x( x-y) / x^3 (y-x) 3a-36/ 12b- ab 8b^2-8a^2 / a^2-2ab + b2

Answer 1

5x( x-y) / x^3 (y-x)
$\frac{-5x(y-x)}{ x^{3}(y-x) } =- \frac{5}{ x^{2} }$

3a-36/ 12b- ab
$\frac{3(a-12)}{b(12-a)} = \frac{-3(12-a)}{b(12-a)} =- \frac{3}{b}$

8b^2-8a^2 / a^2-2ab + b2
$\frac{8( b^{2} - a^{2} )}{(a-b)^{2} } = \frac{8(b-a)(b+a)}{(a-b)(a-b)} = \frac{-8(a-b)(b+a)}{(a-b)(a-b)} = - \frac{8b+a}{a-b}$