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Mathematics 16 Online
OpenStudy (anonymous):

Factor by grouping. 3x^2 + 7x – 6 A. (3x – 2)(x – 3) B. (3x – 2)(x + 3) C. (x + 3)(3x + 2) D. (3x + 2)(x – 3)

OpenStudy (anonymous):

3x^2 +7x - 6 COEFFICIENT OF x^2 = 3 ( 3) ( -6) = -18 FIND FACTORS OF -18 WHICH ADD UP TO +7 ( COEFFICIENT OF x ) ( + 9) ( - 2) = -18 3x^2 +9x -2x -6 3x ( x+3) -2( x+3) ( 3x -2) ( x+3) ANSWER so B

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