Question

Expand the following
1. (4a-b+2c)2
2. (-x +2y-3z)2

Answer 1

(4a-b+2c)2
=4a(2)-b(2)+2c(2)
=8a-2b+4c


(-x+2y-3z)2
= -x(2)+2y(2)-3z(2)
= -2x+4y-6z







Hope you are satisfied