expand::(3x+y-2z)square
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(3x+y-2z)^2
9x^2+y^2+4z^2+2×3x×y-2×y×2z-2×3x×2z
9x^2+y^2+4z^2+6xy-4yz-12xz
9x^2+y^2+4z^2+2×3x×y-2×y×2z-2×3x×2z
9x^2+y^2+4z^2+6xy-4yz-12xz
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16
Hey
We can apply (a +b+c)² = a² + b² c²+ (2ab +2bc +2ac)
so ur answer is :
(3x)² + y² + (2z)² + 2(3x)(y) +2(y)(2z) + 2(3x)(2z)
= 9x² + y² + 4z² + 6xy + 4yz + 12xz
Hope it helps :)
We can apply (a +b+c)² = a² + b² c²+ (2ab +2bc +2ac)
so ur answer is :
(3x)² + y² + (2z)² + 2(3x)(y) +2(y)(2z) + 2(3x)(2z)
= 9x² + y² + 4z² + 6xy + 4yz + 12xz
Hope it helps :)
BholuDahiya:
ok
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