JAMB - Mathematics (1991 - No. 24)

Solve the equation (x - 2) (x - 3) = 12
2, 3
3, 6
-1, 6
1, -6

Explanation

(x - 2) (x - 3) = 12

x\(^2\) - 3x - 2x + 6 = 12

x\(^2\) - 5x - 6 = 0

(x +1)(x - 6) = 0

x = -1 or 6

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