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March 25, 2017

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solve for x
-2x^2-4x+5=0

is the answer -2.22, 0.22

  • algebra - ,

    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

  • algebra - ,

    Thank you so much could you look at my other problem

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