Question

3a(a+b+c)−2b(a−b+c)from 4c(−a+b+c)

Answer 1

3a(a+b+c)−2b(a−b+c)
3a²+3ab+3ac-2ba+2b² -2bc
3a²+ab+3ac+2b²-2bc
4c(-a+b+c) = -4ac+4bc+4c²
(-4ac+4bc+4c²) - (3a²+ab+3ac+2b²-2bc)
-4ac+4bc+4c²-3a²-ab-3ac-2b²+2bc
(-4ac-3ac) - (4bc + 2bc) - 4c²- 3a² - ab - 2b²
-7ac + 6bc - 4c²- 3a² - ab - 2b²

Answer 2

answer is -3a2+2b2+4c2-7ac-ab+2bc