4x^2 +y^2 + z^2 +2yz - 4xy-4xz
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(2x)^2+(y)^2+(z)^2+2×y×z-2×2x×y-2×2x×z
(a+b+c)=a^2+b^2+v^2+2ca+2ab+2bc
(2x+y+z)
I hope it helps you......
(a+b+c)=a^2+b^2+v^2+2ca+2ab+2bc
(2x+y+z)
I hope it helps you......
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