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posted by Elisa on Friday, June 17, 2011 at 4:57pm.

Factor by grouping, if possible, and check 5x3 + 4x2 − 10x – 8

try 5 x^3 - 10 x and 4 x^2 - 8 5 x(x^2-2) and 4(x^2-2) ah ha (x^2-2)(5x+4)

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