SAT Math Advanced Math

Rational Expressions

Simplify rational expressions, find domain restrictions, and evaluate — with full SAT strategy tips on when x cannot equal a value.

Factor both polynomials

Domain restrictions found

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Rational Expression: N(x) / D(x)

Numerator: ax² + bx + c

Denominator: dx² + ex + f

Mode

x value

Result

Simplified

Enter values and press Compute

Step-by-Step Simplification

Factored Form Visualization

Put It Into Practice

The calculator shows the steps — a quiz proves you can do them on your own.

SAT tutoring covers factoring, domain restrictions, and simplification so you never lose points on these tricky algebra questions.