Solve the quadratic equation 12x2 - 3x - 9 = 0 by factoring.
Question
Updated 6/28/2014 12:11:34 AM
Flagged by andrewpallarca [6/28/2014 12:11:34 AM]
Original conversation
User: Solve the quadratic equation 12x2 - 3x - 9 = 0 by factoring.

Question
Updated 6/28/2014 12:11:34 AM
Flagged by andrewpallarca [6/28/2014 12:11:34 AM]
Rating
3
12x^2 - 3x - 9 = 0;

3(4x + 3)(x - 1) = 0;

3 (4x + 3) =0; 12x + 9 = 0; 12x = -9; x = -9/12; x = -3/4
(x - 1) = 0; x = 1

the solution set is {-3/4, 1}

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