Question

Simplify: (x + y + z)^2– (x - y + z)^2 (Using suitable identity)
pls don't cheat very urgent​

Answer 1

Answer:

4xy + 4yz

Step-by-step explanation:

(x+y+z)² - (x-y+z)²

=> { x² + y² + z² + 2xy + 2xz + 2yz } - { x²+y² + z² -2xy + 2xz - 2yz }

=> { x² + y² + z² + 2xy + 2xz + 2yz - x² - y² - z² + 2xy - 2xz + 2yz }

=> 4xy + 4yz