A rational algebraic expression is the ratio of two algebraic expressions. That is, one algebraic expression divided by another. It is important that the domain is defined in such a way the the rational expression does not involve division by 0.
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irrational expression is that wich are not rational or it can't be written in the form of p/q. such as (x)1/3
There are a couple: (1+SQRT(5))/2 1/(2*cos(72)) (degrees only)
A rational expression is not defined whenever the denominator of the expression equals zero. These will be the roots or zeros of the denominator.
True
a rational expression.