Solve the equation 5x2 – 4x – 1 = 0
- -1, 1/5
- -1, -1/5
- 1, 1/5
-
1, -1/5
- -1, 5
The correct answer is: D
Explanation
5x2 - 4x - 1 = 05x2 5x + x -1 = 0
5x(x - 1) + (x - 1) = 0
(5x + 1)(x -1) = 0
x = -1/5 or 1 = 0