Math, asked by nk789gmailcom, 1 day ago

Solve by using identities (x - y) (x + y) + (y - z) (y - z) + (z - x) (z + x)​

Answers

Answered by deepanjali89
0

Answer:

2z (z - y)

Step-by-step explanation:

(x - y) (x + y) + (y - z) (y - z) + (z - x) (z + x)

x² - y² + (y - z)² + z² - x²

x² - y² + y² - 2yz + z² + z² - x²

x² - x² - y² + y² + z² + z² - 2yz

2z² - 2yz

2z (z - y)

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