It doesn't factor neatly. If you solve it, you get the square root of 12/7 which is either 2 times the square root of 3/7 or -2 times the square root of 3/7
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(x - 6)(x - 2)
Try to factor the left side and set each of the linear expressions equal to zero. 7x^2 +8x -12= 0 (7X-6)(X+2)=0 7X-6=0 X=6/7 X+2=0 X=-2
(7x - 4)(x + 1 ) making x = either 4/7 or -1 Check: (7 x 16/49) + 12/7 = 16/7 + 12/7 = 4 ok 7 + (-3) = 4 ok...and there you have it.
Using the quadratic equation formula:- x = -4.706950048 and x = 0.849071913