Question

se y=2x e z=2y, então (x+y-z) elevado a 5 é igual a?​

Answer 1

$\left(x+y-z\right)^5~=~\left(~x+\left(2x\right)-\left(2y\right)~\right)^5~=~\left(~x+2x-\left(2~.~\left(2x\right)\right)~\right)^5~=\\\\\\=~\left(~3x-\left(4x\right)~\right)^5~=~\left(3x-4x\right)^5~=~(-x)^5~=~\boxed{-x^5}$