Question

(d) x - [2y - {4x - (2y - 3z)}]​

Answer 1

Step-by-step explanation:

(4x−2y−3z) ²

We know that (x+y+z)² =x ² +y²

+z² +2xy+2yz+2xz

Here x=4x, y=-2y and z=-3z we get

(4x−2y−3z) ² =(4x) ² +(−2y) ²

+(−3z) ² +2(4x)(−2y)+2(−2y)(−3z)+2(4x)(−3z)

=16x ² +4y ² +9z²−16xy+12xy−24xz