Question

expand it.............​

Answer 1

hey mate..!!!!

find here :

(x-1/2 y + 1/3 z )²=?

Solution :

we know that,

(a+b+c)²=a²+b²+c²+2ab+2bc+2ca

so,

(x-1/2 y + 1/3 z )²

=x²+(-1/2 y)²+(1/3 z )²+2x(-1/2 y)+2(-1/2 y)(1/3 z )+2(1/3 z )x

= x²+y²/2 + z²/9 - xy -(yz/3 )+2xz/3

I hopes its helps u.!!

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