SOLUTION: solve the following equation using the quadratic formula 2x2-7x-1=0 the solution set is?

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Question 302203: solve the following equation using the quadratic formula
2x2-7x-1=0
the solution set is?
Answer by london maths tutor(243) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2-7x-1=0
Using quadratic formulas: x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
where a = 2, b = -7 and c = -1
x+=+%28-%28-7%29+%2B-+sqrt%28+%28-7%29%5E2-4%2A2%2A%28-1%29+%29%29%2F%282%2A%282%29%29+
x+=+%287%29+%2B-+sqrt%28+%2849-%28-8%29+%29%2F4%29+
x+=+%287%29+%2B-+sqrt%28+%2849%2B8%29+%29%2F4%29+
x+=+%287%29+%2B-+sqrt%28+%2857%29+%29%2F4%29+
x = 5.11 or x = 8.89