SOLUTION: Solve {{{ -2x^2+4x-1=0 }}}

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve {{{ -2x^2+4x-1=0 }}}       Log On


   

Question 973704: Solve +-2x%5E2%2B4x-1=0+
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Not factorable using real numbers.

Discriminant: 4%5E2-4%28-2%29%28-1%29=16-8=8

x=%28-4%2B-+sqrt%288%29%29%2F%282%28-2%29%29

x=%28-4%2B-+2sqrt%282%29%29%2F%28-4%29

highlight%28x=1%2B-+sqrt%282%29%2F2%29 or whichever equivalent form you want.