If x =
is a zero of the polynomial f(x) =8x3+ax2-4x+2, find the value of a.
If x = 
f (
) = 8(
)3 + a (
)2 - 4 (
) + 2
0 = 1 + 
- 2 + 2
a = - 4
2
If x = is a zero of the polynomial f(x) =8x3+ax2-4x+2, find the value of a.
If x =
f () = 8()3 + a ()2 - 4 () + 2
0 = 1 + - 2 + 2
a = - 4