Question

expand the following using identities. 1)(2x-y+z)²​

Answer 1

Answer:

As we know that

(a+b+c)² = a² +b² +c² +2(ab + BC +. CA)

Applying this identity

(2x- y +z)²

(2x)² +(-y)² +z² +2(-2xy - yz + 2xz)

4x² -y² +z² -4xy -2yz +4xz

Hope it helps