Solve the equation 5x2 - 4x - 1 0 - WAEC Mathematics 1998 Question
Solve the equation 5x2 - 4x - 1 = 0
A
-1, 1/5
B
-1, -1/5
C
1, 1/5
D
1, -1/5
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Correct Option: D
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
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