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Help Chapter 3 test tomorrow!
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9m^2-(m-2)^2
(3m)^2 - (m-2)^2 Hint: write 9 = 3^2
(3m+m-2) (3m-(m-2)) Hint: use formula a^2 - b^2 = (a+b)(a-b)
(4m-2) (3m-m+2)
(4m-2) (2m+2)
Hence the factors are (4m-2) (2m+2)
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