Asked by chen
list all the possible integral zeros:
P(x)= x^3-2x^2-11x+12
P(x)= x^3-2x^2-11x+12
Answers
Answered by
MathMate
The factor theorem helps us to say that the possible integral roots are in the form of (x±k), where k is a possible factor of the constant term (12) divided by a possible factor of the leading coefficient (1).
Thus for the given problem, the possible integral zeroes are
±1,±2,±3,±4,±6,±12.
Also, the sign of the coefficients changed twice, so by Descartes rule of signs, there are zero or two positive roots, and one negative root.
Thus for the given problem, the possible integral zeroes are
±1,±2,±3,±4,±6,±12.
Also, the sign of the coefficients changed twice, so by Descartes rule of signs, there are zero or two positive roots, and one negative root.
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