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Thread: use the quadratic formula to solve

  1. December 11th 2007, 01:30 PM #1
    lovely08
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    use the quadratic formula to solve

    2n squared= -10n - 5
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  2. December 11th 2007, 04:40 PM #2
    colby2152
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    Quote Originally Posted by lovely08 View Post
    2n squared= -10n - 5
    2n^2+10n+5=0
    n=\frac{-10 \pm \sqrt{100-4(5)2}}{4}
    n=\frac{-10 \pm \sqrt{60}}{4}
    n=\frac{-10 \pm 2\sqrt{15}}{4}
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