# How to Simplify Rational Expressions by Factoring?

Rational expressions are fractions with a polynomial in both the numerator and denominator. It is often advantageous to simplify these expressions by factoring both polynomials completely, then can... Read More »
http://www.ehow.com/how_8369223_simplify-rational-expressions-factoring.html

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## How to Find the LCD of Two Rational Expressions?

The LCD, short for least or lowest common denominator, is the smallest integer that is a multiple of a denominator. The main purpose of finding the LCD is to make the addition and subtraction of ra... Read More »
http://www.ehow.com/how_8478747_lcd-two-rational-expressions.html

## How to Factor Rational Expressions?

Students usually learn to factor rational expressions during the early years of high school as part of an algebra course. The process can be challenging and requires a substantial amount of backgro... Read More »
http://www.ehow.com/how_8198340_factor-rational-expressions.html

## How to Simplify Using Factoring & Cancellation?

Fractional numeric and algebraic expressions can be simplified by canceling if the same factor occurs in both the numerator and denominator. Essentially, this is the same procedure as reducing a fr... Read More »
http://www.ehow.com/how_8220025_simplify-using-factoring-cancellation.html

## How to Evaluate Rational Expressions Using a Calculator?

In algebra class, you will frequently be asked to evaluate rational expressions. For instance, you might be given the expression (x2-1)/x and asked to evaluate the numerical value of the expression... Read More »
http://www.ehow.com/how_8464042_evaluate-rational-expressions-using-calculator.html

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