Solve the equation (x +2)(x - 7) = 0
MATHEMATICS
WAEC 1995
Solve the equation (x +2)(x - 7) = 0
- A. x = 1 or 8
- B. x = -2 or 7
- C. x = -4 or 5
- D. x = -3 or 6
Correct Answer: B. x = -2 or 7
Explanation
(x + 2)(x - 7) = 0
x + 2 = 0 \(\implies\) x = -2
x - 7 = 0 \(\implies\) x = 7
x = -2 or 7
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