Question

. What should be added to 4c (a + b + c) to get 3a (a + b + c) - 2b (a - b + c)?​

Answer 1

Step-by-step explanation:

first simplify what you want to get

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

3a² + 3ab + 3ac - 2ab + 2b² - 2bc

3a² + 2b² + ab + 3ac - 2bc --eq1

what we have?

4c(a + b + c)

4ac + 4bc + 4c²

to add to get eq1

4ac + 4bc + 4c² ( -3a² -2b² -ab -ac -6bc)

answer in bold in last line

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