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Math Help - Looking For A Double Root

  1. #1
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    Lightbulb Looking For A Double Root

    Can You Help Me To Find It ?

    c^2 + bc + 4 = 0
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  2. #2
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    Quote Originally Posted by JessiesGirl View Post
    Can You Help Me To Find It ?

    c^2 + bc + 4 = 0
    I'm assuming that c is the variable?

    For a double root, the discriminant of the quadratic equation is equal to zero.

    If you have a number Ax^2+Bx+C = 0 , then the discriminant is  B^2-4AC
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  3. #3
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    I didn't Get It ...
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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by JessiesGirl View Post
    I didn't Get It ...
    in order to have a double root set b^2 - 4(4) = 0 and solve for

    as Mush said, this comes from the discriminant in the quadratic formula.
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