Rational Expressions

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Define a rational expression.

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A rational expression is a fraction where both the numerator and the denominator are polynomials.

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What is the domain of a rational expression?

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The domain of a rational expression is all real numbers except where the denominator equals zero.

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What is the first step in simplifying a rational expression?

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The first step is to find a common denominator for all fractions involved.

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What does it mean to divide rational expressions?

Back

Dividing rational expressions involves multiplying by the reciprocal of the divisor.

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What is the process of finding the least common denominator (LCD)?

Back

The LCD is found by determining the least common multiple of the denominators of the rational expressions.

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What is a polynomial?

Back

A polynomial is an expression consisting of variables raised to whole number powers and coefficients.