Question

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

Answer 1

Step-by-step explanation:

3a(a+b+c)= 3a²+3ab+3ac

2b(a-b+c)= 2ab-2b²+2bc

3a²+3ab+3ac

+2ab -2b²+2ab

___-_______+__-_____

3a²+5ab+3ac+2b²-2ab

__________________

4c(-a+b+c)= -4ac+ 4cb+ 4c²

-4ac+4cb+4c²

+3ac +3a²+5ab+2b²-2ab

_-_________-___-___-___+_____

-7ac+4cb+4c²-3a²-5ab-2b²+2ab

________________________