Question

If x - a is a factor of x^3 - 3x^2a + 2a^2x + b, then the value of b is a) 2 b) 0 c) 1 d) 3

Answer 1

Step-by-step explanation:

let p(x) = x^3 -3x^2a +2a^2x+b

if x-a is factor of p(x)

then p(a) =0

a^3-3a^2*a+2a^2*a+b=0

0+b=0

b=0