JAMB - Mathematics (2008 - No. 18)
Solve the quadratic inequalities x\(^2\) - 5x + 6 ≥ 0
x ≤ 2, x ≥ 3
x ≤ 3, x ≥ 2
x ≤ -2, x ≥ -3
x ≤-3, x ≥ 2
Selitys
x\(^2\) - 5x + 6 = 0
(X-2)(X-3) = 0
X-2 = 0 implies X = 2
X-3 = 0 implies X = 3
∴ x ≤ 2, x ≥ 3
x\(^2\) - 5x + 6 = 0
(X-2)(X-3) = 0
X-2 = 0 implies X = 2
X-3 = 0 implies X = 3
∴ x ≤ 2, x ≥ 3