Question

(x+y+z) square means 2

Answer 1

(x+y+z)²=x²+y²+z²+2xy+2yz+2xz

Answer 2

Heya ✋

Let see your answer !!!

$(x + y + z) ^{2} \\ = x ^{2} + y ^{2} + z ^{2} + 2xy + 2yz \\ + 2zx$



Thanks :)))