If (x-2).P(x)= 3x^3+ax-10(x−2).P(x)=3x3+ax−10 , what is P(-1)P(−1) ? Precalculus Polynomial Functions of Higher Degree Polynomial Functions of Higher Degree on a Graphing Calculator 1 Answer Konstantinos Michailidis Jun 5, 2016 From (x-2)P(x)=3x^3+ax-10(x−2)P(x)=3x3+ax−10 for x=2x=2 we get (2-2)P(2)=3*2^3+2a-10=>0=14+2a=>a=-7(2−2)P(2)=3⋅23+2a−10⇒0=14+2a⇒a=−7 Hence the relation becomes (x-2)P(x)=3x^3-7x+10(x−2)P(x)=3x3−7x+10 For x=-1x=−1 then (-1-2)P(-1)=-3+7+10=>P(-1)=-14/3(−1−2)P(−1)=−3+7+10⇒P(−1)=−143 Answer link Related questions What is a higher degree polynomial function? How do I graph f(x) = x^5 - 3x^4 + 11x - 9f(x)=x5−3x4+11x−9 on a TI-84? How do I graph f(x) = x^5 - 3x^4 + 11x - 9f(x)=x5−3x4+11x−9 on an Nspire? How do I find real zeros of f(x) = x^5 - 3x^4 + 11x - 9f(x)=x5−3x4+11x−9 on a TI-84? How do I find extrema of f(x) = x^7 - 14x^5 - 4x^3 - x^2 + 3f(x)=x7−14x5−4x3−x2+3 on a graphing calculator? How do you find the degree of the polynomial function f(x)=-2x+7x^2f(x)=−2x+7x2? How do you find the inverse function f(x) = -3 x^7-2f(x)=−3x7−2? Is f(x) = 5x^4 - pi(x)^3 + (1/2)f(x)=5x4−π(x)3+(12) a polynomial function and if so what is the degree? Is h(x) = sqrt{x} times (sqrt{x} - 1)h(x)=√x×(√x−1) a polynomial function and if so what is the degree? Is g(x) = (x^2 - 5)/(x^3)g(x)=x2−5x3 a polynomial function and if so what is the degree? See all questions in Polynomial Functions of Higher Degree on a Graphing Calculator Impact of this question 2315 views around the world You can reuse this answer Creative Commons License