Question

if x^2+x+1 is a factor of polinomial 3x^3+8x^28x+a then find the value of a..........

please answer quiqly as you can​

Answer 1

Step-by-step explanation:

Let

3x3 + 8x2 + 8x + a = (x2 + x + 1) (3x + a). Equating coefficient of x

8 = a + 3

8 – 3 = a

a = 5