4c(-a+b+c) - [3a(a+b+c)-2b(a-b+c) – InterviewSolution

1.

4c(-a+b+c) - [3a(a+b+c)-2b(a-b+c)

Answer»

(-4ac+4bc+4c^2)-[3a^2+3ab+3ac-2ab+2b^2-2bc]

-4ac+4bc+4c^2-3a^2-3ab-3ac+2ab-2b^2+2bc

-7ac +6bc-ab+4c^2-3a^2-2b^2

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