Math, asked by Anonymous, 4 months ago

Simplify

$(x+y+z)² + (x+y-z)²$

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Answers

Answered by Anonymous

2

(x+y+z)² + (x+y-z)²

=(x²+y²+z²+2xy+2yz+2zx)-(x²+y²+z²+2xy-2yz-2zx)

this step is in attachment

=4yz+4zx

=4z(y+x)

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