Question

(x+y+2z)^2 using identity

Answer 1

Answer:

We know the algebraic identity ,

( a + b + c )² = a²+b²+c²+2ab+2bc+2ca

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Here ,

a = 2x,

b = - y ,

c = z ,

[ 2x + ( -y ) + z ]²

= (2x)²+(-y)²+z²+2(2x)(-y)+2(-y)z+2z(2x)

= 4x² + y² + z² - 4xy - 2yz + 4zx

I hope this helps you.