SOLUTION: Given 3x^2+(k+2)x=-3, determine the value(s) of k so that the equation has real and equal roots.

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Question 128430: Given 3x^2+(k+2)x=-3, determine the value(s) of k so that the equation has real and equal roots.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Given 3x^2+(k+2)x=-3, determine the value(s) of k so that the equation has real and equal roots.
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The discriminant must be zero.
b^2-4ac = (k+2)^2-4*3*3 = 0
(k+2)^2 = 36
k+2 = 6 or k+2 = -6
k = 4 or k = -8
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Cheers,
Stan H.