Question

If (x-1) is a factor of ax^3+2x^2-x+3a, then find the value of a.​

Answer 1

Answer:

x-1 = 0

x = 1

ax^3+2x^2- x + 3a

a(-1)^3 + 2(-1)^2- (-1) + 3a

-1 + 2 +1 + 3a

2 + 3a = 0

3a = -2

a = -2/3