Question

Check that (x - 2/3) is a multiple of
p(x) = 9x² – 3x²+x-5
​

Answer 1

9(2/3)_3(2/3)^2 + 2/3 _ 5 { x _ 2/3 = 0

x = 2/3 }

= _ 1/3

the answer is not zero hence (x _ 2/3) is not a multiple of p(×)

Answer 2

p(-1) = 6(-1)^2 + -1-5
= 0

there fore x= -1