It all the zeroes of a cubic polynomial are negative,
then what can you say about the coefficients and
constant term of the polynomial?
28. If all the zeroes of a cubic polynomial
x + ax? - bx + c are positive, then what can you say
about a, b and c?
Q29. Find the value of k for which the quadratic
polynomial kx2 + 3x + 2k has equal zeroes.
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when it is negative then
-b/a = 0
I have no idea of 28th question
but this is the answer for rest 2 questions.
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