Question

expand by using identity (2x-y+z)2

Answer 1

(x+y+z)^2= x^2 + y^2 + z^2 +2xy + 2yz + 2zx

We will get the answer as
4x^2 + y^2 + z^2 - 4xy - 2yz + 4zx

Answer 2

Answer:

Step-by-step explanation:identity={(x+y+z)=x^2+y^2+z^2+2xy+2yz+2zx}

=(2x)^2+(-y) ^2+z^2+2*2x*(-y)+2*(-y) *(z) +2*z*2x

=4x^2+y^2+z^2-4xy-2yz+4zx