SOLUTION: x^2+7x-12=0

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Question 401095: x^2+7x-12=0
Answer by jsmallt9(3758) About Me  (Show Source):
You can put this solution on YOUR website!
This equation will not factor so we must use the Quadratic Formula (or complete the square):
x+=+%28-%287%29+%2B-+sqrt%28%287%29%5E2+-+4%281%29%28-12%29%29%29%2F2%281%29
which simplifies as follows:
x+=+%28-%287%29+%2B-+sqrt%2849+-+4%281%29%28-12%29%29%29%2F2%281%29
x+=+%28-%287%29+%2B-+sqrt%2849+%2B+48%29%29%2F2%281%29
x+=+%28-%287%29+%2B-+sqrt%2897%29%29%2F2%281%29
x+=+%28-7+%2B-+sqrt%2897%29%29%2F2
In long form this is:
x+=+%28-7+%2B+sqrt%2897%29%29%2F2 or x+=+%28-7+-+sqrt%2897%29%29%2F2