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A rational number is any number that can be expressed as a fraction. It becomes meaningless or undefined when the lower number, the denominator, its 0 (zero)

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7y ago
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Wiki User

7y ago

Whenever the denominator is zero.

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Anonymous

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3y ago

Cool

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Q: When is rational expression undefine or meaningless?
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Related questions

A rational expression minus another rational expression is?

Another rational expression.


A rational expression multiplied by another rational expression is a rational expression?

Yes.


What fraction having rational expression in its numerator or denominator or both?

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


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The question is meaningless. 50,550,555 is a rational number.


What makes a rational expression undefined?

a rational express ion undefined when the denominator is 0 because we cannot dvide by 0. For example, 9/x is undefine when x is 0 because we would be dividing by 0. Similarly 2/(7-x) is undefined for x=7 because we once again have a zero in the denominator. To find where a rational expression is undefined, set the denominator equal to 0 so if we have p/q where q is any number or expression, set and solve q=0 From, Doctor Huge Dick


Is a rational number is a rational expression?

Any number that can be expressed as a fraction is a rational number otherwise it is an irrational number.


What is the rational expression of 1 divided by 3z plus 5?

The expression written in the question is the rational expression.


Have a nice day in native American language?

"Have a nice day" is a meaningless modern American English expression devised by the retail industry and there is definitely nothing equivalent to it in any rational historic language.


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factor 21x + 16?

The expression is not factorable with rational numbers.


What is subtraction of rational expressions?

another rational expression.


How do you determine the values for which a rational expression is undefined?

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