Question

Expand : (4a - 2b - 3c)2

Answer 1

Answer:

when we multiply (4a-2b-3c) with 2=8a-4b-6c

Answer 2

Answer:

(4a+(_2b)+(-3c))2

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

putting:x=4a,y=-2b,z=-3c

(4a)2+(-2b)2+(-3c)2+2(4a)(-2b)+2(-2b)(-3c)+2(-3c)(4a)

=16a2+4b2+9c2-16ab+12bc-24ac