-0.7
4
Another rational expression.
Yes.
If you divide a rational expression by another rational expression, you will again get a rational expression.
Yes, a rational expression and its simplified forms are equivalent. Simplifying a rational expression involves reducing it to its simplest form by canceling common factors in the numerator and denominator. While the expressions may look different, they represent the same value for any input that does not make the denominator zero. Therefore, they are considered equivalent as long as the values do not lead to undefined terms.
Any number that can be expressed as a fraction is a rational number otherwise it is an irrational number.
The expression written in the question is the rational expression.
Any rational number of the form 5k/8k where k is an integer is equivalent.
I can see no rational expression below.
The expression is not factorable with rational numbers.
another 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.