Asked by Josh
Find a third degree polynomial P(x) that has zeros at x=-1, x=1, x=2 and whose x-term has coefficient 3?
Answers
Answered by
Steve
P(x) = a(x+1)(x-1)(x-2)
= ax^3 - 2ax^2 - ax + 2a
Looks like a = -3
P(x) = -3(x+1)(x-1)(x-2) = -3x^3 + 6x^2 + 3x - 6
= ax^3 - 2ax^2 - ax + 2a
Looks like a = -3
P(x) = -3(x+1)(x-1)(x-2) = -3x^3 + 6x^2 + 3x - 6
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