Home ยป Solve the equation 5×2 – 4x – 1 = 0

Solve the equation 5×2 – 4x – 1 = 0

Solve the equation 5x2 – 4x – 1 = 0
  • A.
    -1, 1/5
  • B.
    -1, -1/5
  • C.
    1, 1/5
  • D.
    1, -1/5
  • E.
    -1, 5
Correct Answer: Option D
Explanation

5x2 – 4x – 1 = 0
5x2 5x + x -1 = 0
5x(x – 1) + (x – 1) = 0
(5x + 1)(x -1) = 0
x = -1/5 or 1 = 0