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Mathematics 21 Online
OpenStudy (anonymous):

Factor completely: 2x2 + 9x + 4

OpenStudy (dumbcow):

multiply first and last coefficients ....2*4 = 8 what factors of 8 add up to 9?

OpenStudy (dumbcow):

8 and 1 split the 9x into 8x+x --> (2x^2 +8x )+(x +4) Factor by grouping

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