Question

Find the value of 'a' if x-1 is a factor of the polynomial a²x³ - 4ax + 4a -1.

plz tell my answer​

Answer 1

i dont no this answer findthe value

Answer 2

Answer:

If x-1 is a factor then take x-1=0 or x =1

Put this value of x in the polynomial

a^2(1)^3 -4a(1) +4a -1=0

a^2 -4a +4a -1 =0

a^2 -1=0

a^2 = 1

a = +1 , a=-1