Question

(x+y+z)² - x²-y²-z²​

Answer 1

Answer:

xy + yz + zx

Explanation:

(x+y+z)^2 = X2+y2+z2 and gets cancelled out and the above answer comes

Answer 2

Answer:

(x+y+z)² - x²- y²- z²

x²+y²+z²- x²-y²-z²

0

ans) 0