AM-1473

Quadratic inequalities

A Math · Secondary 4 · Medium · Quadratic inequalities

1. $x<1$ or $x>3$
2. $\dfrac{5-\sqrt{13}}{2} < x < \dfrac{5+\sqrt{13}}{2}$
3. $x\le 1$ or $x\ge 3$
4. $x\ge 1$ and $x\le 3$

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