Question

exapnd it using suitable identity (2x-y+z)²​

Answer 1

Step-by-step explanation:

Identity = (x+y+z)²= x²+y²+z²+2xy+2yz+2zx

ATQ,

(2x-y+z)²

4x²+y²+z²+2(2x)(-y)+2(-y)(z)+2(z)(2x)

4x²+y²+z²-4xy-2yz+4zx

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Answer 2

Answer:

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

= 4x^2 + y^2 + z^2 - 4xy - 2yz + 4xz

Step-by-step explanation:

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