Posted by Mary on Sunday, May 1, 2011 at 4:59pm.
I have no idea how you got your answers.
Didn't you test them by substituting them back into the equation ?
-2x^2 - 4x + 5 = 0
2x^2 + 4x - 5 = 0
x = (-4 ± √56)/4 = .8708 or -2.8708
Thank you so much could you look at my other problem
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