AM-164

Discriminant and nature of roots

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

1. $3-4\sqrt{3}<k<3+4\sqrt{3}$
2. $k<3-4\sqrt{3}$ or $k>3+4\sqrt{3}$
3. $k\le 3-4\sqrt{3}$
4. $k\ge 3+4\sqrt{3}$

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