Question

OMIALS
Expand each of the following using suitable identities:
(i) (x+2y + 4z) ^2
(ü) (2x -y+z)^2​

Answer 1

Answer:

x²+4y²+16z²+2xy+8yz+4zx

by (a+b+c)²=a²+b²+c²+2ab+2ac+2bc

4x²+y²+z²-4xy-2zy+4xz

Step-by-step explanation:

by (a-b+c)²=a²+b²+c²-2ab+2ac-2bc