Solve the equation x 2 - 2x - 3 = 0
MATHEMATICS
WAEC 1993
Solve the equation x2 - 2x - 3 = 0
- A. (-3, 1)
- B. (-1, -3)
- C. (3,1)
- D. (-1, 3)
Correct Answer: D. (-1, 3)
Explanation
x\(^2\) - 2x - 3 = 0
x\(^2\) - 3x + x - 3 = 0
x(x - 3) + 1(x - 3) = 0
(x + 1)(x - 3) = 0
x = (-1, 3)
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