Question

3a(a+b+c)-2b(a-b-c)from 4c(a+b+c)​

Answer 1

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Answer 2

Answer:

-3a²-ab+ac+2b²+2bc+4c²

Step-by-step explanation:

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

3a²+3ab+3ac-2ab+2b²+2bc

3a²+ab+3ac+2b²+2bc ..................(1)

4c(a+b+c)

4ac+4bc+4c² ....................(2)

Subtract (1) from (2)

4ac +4bc+4c²

3a²+ab+3ac-2b²+2bc

(-) (-) (-) (+) (-)

-3a²-ab+ac+2b²+2bc+4c²

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