49 a^{2}+84 a b+36 b^{2} – InterviewSolution

1.	49 a^{2}+84 a b+36 b^{2}
Answer» 49aa+84ab+36bb = (7a)(7a)+2(7a)(6b)+(6b)(6b) = (7a+6b)(7a+6b)

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