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10 cards from this deck
Expressions with inequalities involving quadratic polynomials.
They focus on ranges of solutions, not exact values.
Set the inequality to zero and find the critical points.
Use the Sign of the Factors Method for interval testing.
Points where the expression equals zero, defining intervals.
Graph the quadratic function and identify intervals.
The inequality sign flips direction.
Ensure the denominator is not zero.
Use Desmos or GeoGebra for analysis and verification.
Missing sign flips when multiplying or dividing by negatives.
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