Help Chapter 3 test tomorrow!
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(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)
Hence the factors are (4m-2) (2m+2)
how dod you get the 3m from the 9m
it was given 9m^2,
9 = 3X3 = 3^2
so 9m^2 = 3^2 m^2 = (3m)^2
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