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Concept

Quadratic Inequality

A quadratic inequality is an inequality that involves a quadratic expression. Quadratic inequalities for one variable usually lead to compound inequalities.

x^{2} - 9 \geq 0 ⇕ x \geq 3 and x \leq - 3

The solution set of a quadratic inequality of two variables is described using its boundary curve.

Exercises

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