Question

(d) Subtract: 3a (a+b+c)-2 b(a - b + c) from 4c (- a+b+c)​

Answer 1

Answer:

4c(−a+b+c)−[3a(a+b+c)−2b(a−b+c)]

4c(−a+b+c)−[3a2+3ab+3ac−2ab+2b2−2bc]

4c(−a+b+c)−[3a2+2b2+ab+3ac−2bc]

−4ac+4bc+4c2−3a2−2b2−ab−3ac+2bc

4c2−3a2−2b2−ab+6bc−7ac