Math, asked by sangeetarani84473670, 9 months ago

question no15 please solve it

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Answered by vishalgupta2941

1

Step-by-step explanation:

(2x-y+z²)

Identity

(a+b+c)²

a²+b²+c²+2ab+2bc+2ca

(2x)²+(-y)²+(z)²+2×2x×-y + 2×-y×z + 2×z×2x

4x²+ y²+ z²+ (-4xy) + (-2yz) + (4zx)

4x²+ y²+ z²- 4xy - 2yz + 4zx

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