If , cosα is a root of
a) x3 - 4x2 + 4x – 8 = 0
b) x3 + 4x2 – 4x + 8 = 0
c) 8x3 - 4x2 – 4x + 1 = 0
d) 8x3 + 4x2 – 4x – 1 = 0
Your Answer
, cosα is a root of
