Birginia C.
asked • 10/21/20The polynomial of degree 3, P(x), has a root of multiplicity 2 at x=4 and a root of multiplicity 1 at x=−1. The y-intercept is y=−6.4.
Find a formula for P(x).
Raymond B. answered • 01/08/26
Math, microeconomics or criminal justice
P(x) = a(x+1)(x-4)^2
-6.4 =16a
a = -6.4/16= -.4
P(x) = -.4(x+1)(x^2 -8x +16)
= -0.4(x^3 -7x^2 +8x +16)
= -.4x ^3 +2.8x^2 -3.2x -6.4
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