Question

If x-a is factor of x^3-3x^2*a+2*a^2*x+b the find value of b

Answer 1

EXPLANATION.

• GIVEN

if x - a is a factor of x^3 - 3x^2a + 2a^2x + b

TO FIND VALUE OF B.

x - a = 0

x = a

put the value of x = a in above equation

we get,

(a) ^3 - 3 (a)^2a + 2a^2(a) + b = 0

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

a^3 - a^3 + b = 0

0 + b = 0

b = 0

Therefore,

value of b = 0