Question

Solve 8x 2 - 2x - 1 = 0

{-1/4, 1/2}
{-1/2, 1/4}
{1/2}

Answer 1

8x^2 - 2x - 1 = 0
(2x - 1)(4x + 1) = 0
2x - 1 = 0; x = 1/2
4x + 1 = 0;x = -1/4

answer
{-1/4, 1/2}