Question

Find the posible value of k. Given that m has the same remainder when it is divided by x+k or x-k and m=4x^3+7x^2-144x+36

Answer 1

ANSWER

x

3

+2x

2

+kx+3

∴f(3)=21

3

3

+2.3

2

−3k−3=21

9+6+k+1=7

k=−9