Q: To get the answer of a rational expression when you have the same denominator what do you do?

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To eliminate the radical in the denominator.

rational expression

When the denominator is a factor of the numerator. If there is 2x in the numerator and denominator these terms cancel.

False

You can multiply both sides by the LCD because as a rule, you can do anything to one side of an equation as long as you do the same thing to the other side. But when you simplify a rational EXPRESSION, you don't have an EQUATION. So there is no other side. So you can't multiply both sides by anything. You can, however, multiply both the numerator and the denominator by the same term (except zero).

Related questions

If you divide a rational expression by another rational expression, you will again get a rational expression.

A rational expression is not defined whenever the denominator of the expression equals zero. These will be the roots or zeros of the denominator.

To eliminate the radical in the denominator.

rational expression

rational expression

You divide the numerator of the rational expression by its denominator.

True

It cannot be zero.

The value of the denominator cannot be zero.

a rational expression is undefined when the denominator is 0 because we cannot dvide by 0.

When the denominator is a factor of the numerator. If there is 2x in the numerator and denominator these terms cancel.

factor