Question

Expand ( 2 x - y + z )2 by using suitable indentity​

Answer 1

Answer:

Answer:

Given (2x – y + z)2

Using identity,

(x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx

Here,

x = 2x

y = −y

z = z

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

(2x – y + z)2 = 4x2 + y2 + z2 – 4xy – 2yz + 4xz

Step-by-step explanation: