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## Graphs and sign tests for squared functions greater or less than a number.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

by CK-12 //at grade
Graphing and solving quadratic inequalities.
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## Finding Solution Sets

by CK-12 //at grade
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• Video

## Solving Quadratic Inequalities

by CK-12 //at grade
Explains how to solve quadratic inequalities algebraically and graphically.
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