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Christopher
Christopher asked in Science & MathematicsMathematics · 4 years ago

If the roots of the equation 3x^2-5x+q=0 are equal, find q.?

Answer given: q=25/12

3 Answers

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  • Como
    Lv 7
    4 years ago
    Favorite Answer

    x = [- b ± √ (b² - 4ac) ] / 2a

    For equal roots b² = 4ac

    25 = 12 q

    q = 25/12

  • ?
    Lv 7
    4 years ago

    roots are equal when discriminant is zero

    use that

  • Aditya
    Lv 4
    4 years ago

    If roots of quadratic equation ax^2 + bx + c = 0 are equal then discriminant b^2 -4ac = 0 OR b^2= 4ac

    so according to question a = 3 , b = -5 , c = q

    so b^2 = 4ac

    (-5)^2 = 4(3)(q)

    q = 25/12

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