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07-06-2017
Mathematics

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write the expression in factored form 9m^2-49

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07-06-2017

(3m + 7) (3m - 7) this is a perfect square so the signs will always be opposites. You can tell that it is a perfect square because of the 9 and the 49. the square root of 9 is 3 and the square root of the 49 is 7

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