Question

(x+y-z)²+(x+y+z)² simplify it by on expansion of (a+-b+-c)²​

Answer 1

Answer:

(x+y+z) 2−(x+y+z) 2

=(x+y+z+x+y+z)(x+y+z−x−y−z) since (a 2−b 2)=(a+b)(a−b)

=2(x+y+z)×0=0

Step-by-step explanation:

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