SOLUTION: Find the roots of 2x^2-kx+1

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Question 1013053: Find the roots of 2x^2-kx+1
Found 2 solutions by josgarithmetic, fractalier:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
2x%5E2-kx%2B1=0

Can you factor it? No.
Can you complete the square and then solve? Yes.

The initial result would be x=%28k%2B-+sqrt%28%28-k%29%5E2-4%2A2%2A1%29%29%2F%282%2A2%29, which can then be simplified some.

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
If k = 2*sqrt2, then you have a perfect square...
2x%5E2+-+2%2Asqrt%282%29%2Ax+%2B+1+=+%28sqrt%282%29%2Ax+-+1%29%5E2