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    MathMomma's Avatar
    MathMomma Posts: 6, Reputation: 1
    New Member
    		  
    #1

    Jun 29, 2010, 06:11 PM
    solve 4x^2=-8x
    I need to the solve the quadratic equation but I have no idea what I'm doing here!

    4x^2=-8x
    bluefairy_nebul's Avatar
    bluefairy_nebul Posts: 163, Reputation: 18
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    #2

    Jun 29, 2010, 06:37 PM

    4x^2=-8x
    =>x^2=-2x
    =>x^2+2x=0
    =>x(x+2)=0

    so, X=0 , x=-2
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