Math, asked by dddanielrogers, 4 months ago

simplify (12a+5b)(7a-b)

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Answered by Anonymous

20

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$\: \: \: \: \: \: \: \: (12a + 5b)(7a - b) \\ \\ = > 84 {a}^{2} - 12ab + 35ab - 5 {b}^{2} \\ \\ = > 84 {a}^{2} + 23ab - 5 {b}^{2}$

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