Question

x (y-a)-y (x-a)/x(y-a)^2-y (y-a)^2 упростить

Answer 1

= xy-ax-xy+ay / (y-a)²(x-y) = -ax+ay / (y-a)²(x-y) = -a(x-y)/(y-a)²(x-y) = 
=-a/(y-a)²