Question

Упростить. (х-4y)^2+(x+4y)^2

Answer 1

2*(х^2+16у^2-8*х*у)=2х^2-16ху+32у^2

Answer 2

(x-4y)^2+(x+4y)^2=x^2-8xy+16y^2+x^2+8xy+16y^2=2x^2+32y^2=2(x^2+16y^2)