SOLUTION: using the quadratic formula solve x^2-5x-6=0

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Question 135584: using the quadratic formula solve x^2-5x-6=0
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-5x-6=0

You have a quadratic equation of the form ax%5E2%2Bbx%2Bc=0 where a=1, b=-5, and c=-6, so:

Since x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+


x+=+%28-%28-5%29+%2B-+sqrt%28+%28-5%29%5E2-4%2A1%2A%28-6%29+%29%29%2F%282%2A1%29+

Now you only need to do the arithmetic. Hint: sqrt%2849%29=7