Question

check whether the polynomial 2x Cube + x square - 7 x minus 6 is a multiple of X - 3

Answer 1

(-3) =2(-3)+(-3)-7(-3)-6
= -54+3+21-6
= -54+18
= -36


so x-3 is not a multiple of the given ques

Answer 2

x-3=0
x=3

p(x)=2x^3+x^2-7x-6
p(3)=2×(3)^3+(3)^2-7×(3)-6
p(3)=2×27+6-21-6
p(3)=54-21
p(3)=33


no x-3is not multiple of p(x)