qoolebyaqa

Verified answer

1) = 6x^(-4) : x^(-4) = 6

2) (x^-1  + y^-1) * (1/xy)^-2 = (1/x + 1/y) * x^2 y^2 = (y+x) / xy * x^2 y^2 = xy(y+x)