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
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7x2 plus 7x5 = 49
7x2 + 68xy - 20y2
7x2
What does N equal? Well to solve the problem you would do N+7x1, N+7x2, N+7x 3, N+7x4, N+7x5 to figure out the first five terms.
7x2- 63 = -35, when x equals 2