Rational inequalities worksheet for Algebra 2
In Algebra 2 rational inequalities often start with a denominator that has to be factored first. Build one sign chart from the zeros of the top and the bottom together, then write the answer in interval notation, with a parenthesis at every value that makes the bottom zero.
Also taught in Precalculus, at its own level and with its own examples.
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Sigma Prep · sigmaprep.io/worksheets Name Rational Inequalities Date Period Solve each inequality. Write each answer in interval notation. Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep |
Sigma Prep · sigmaprep.io/worksheets Name Rational InequalitiesAnswer keyVersion 2 Date Period Solve each inequality. Write each answer in interval notation. Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep |
How to do these
- Factor the bottom: (x - 2)(x + 2). The chart splits at -3, -2 and 2.
- Test points give the signs -, +, -, + from left to right.
- Include -3, where the top is zero, but not -2 or 2.
The answer is .
Where students go wrong
Closing the bracket at a zero of the bottom. With ≥ or ≤ the zeros of the top are included, but a value that makes the bottom zero, like -2 or 2 here, is never in the answer.
Also called solving rational inequalities, inequalities with fractions or sign chart.
What you can put on this worksheet
- Rational inequalities
- →
- One fraction against a number
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- A quadratic over a linear factor
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- A fraction on each side
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- A squared factor
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- Write one from its solution set
- Write a rational inequality whose solution set is → One answer: