AM-152

Discriminant and nature of roots

A Math · Secondary 3 · Medium · Discriminant and nature of roots

1. $x=3$ or $x=-\dfrac12$
2. $x=\dfrac52$ or $x=-\dfrac32$
3. $x=\dfrac{5+\sqrt{49}}{2}$ only
4. $x=\dfrac{5\pm\sqrt{13}}{4}$

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