Question

2bx(1-a)+2x(a-b-c)-2x(a-c)

Answer 1

2bx(1-a) + 2x(a-b-c) - 2x(a-c) 
2bx - 2abx + 2ax - 2bx - 2cx - 2ax + 2cx 
(2bx - 2bx) + (2ax - 2ax) + (2cx - 2cx) - 2abx 
0 + 0 + 0 - 2abx 
-2abx