Question

Упростите выражение
y-2x / (2x-y)²​

Answer 1

$boxed {(a-b)^2=(b-a)^2}=a^2-2ab+b^2\\\dfrac{y-2x}{(2x-y)^2}=dfrac{y-2x}{(y-2x)^2}=dfrac{1}{y-2x}$