SOLUTION: solve for x: 2x to the 2nd power minus 3x minus 1=0

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Question 173419: solve for x: 2x to the 2nd power minus 3x minus 1=0
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2-3x-1=0
Using the quadratic equation:x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ we get:
x=(3+-sqrt[-362-4*2*-1])/2*2
x=(3+-sqrt[9+8])/4
x=(3+-sqrt17)/4
x=(3+-4.1231)/4
x=(3+4.1231)/4
x=7.1231/4
x=1.78 ans.
x=(3-4.1231)/4
x=-1.1231/4
x=.28 ans.