SOLUTION: Solve 2x^2-2x-1=0 by any method.

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Question 329265: Solve 2x^2-2x-1=0 by any method.
Found 2 solutions by solver91311, checkley77:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




, , and





You can do your own arithmetic. Leave it in simplest radical form for the exact answers.

John

My calculator said it, I believe it, that settles it

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2-2x-1=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(2+-sqrt[-2^2-4*2*-1])/2*2
x=(2+-sqrt[4+8)/4
x=(2+-sqrt12)/4
x=(2+-3.4641)/4
x=5.4541/4
x=1.366 ans.
x=(2-3.4641)/4
x=-1.4641/4
x=-0.366 ans.