if the sum of the zeroes of the cubic polynomial 2xcube - kxsq - 8x - 12 is -3/2 then value of k is what and how

Asked by vikramsingh | 16th May, 2013, 04:19: PM

Expert Answer:

Sum of the roots of a cubic equation ax^3+bx^2 + cx+d = 0 is equal to -b/a
Hence, -(-k)/2 = -3/2
Hence k = -3

Answered by  | 16th May, 2013, 06:32: PM

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