Maths-
General
Easy
Question
Why do you have to state the domain when simplifying rational expressions ?
Hint:
A rational expression is simply a quotient of two polynomials. Or is other words, it is a fraction whose numerator and denominator are polynomials.
We are asked to explain why we have to state the domain when simplifying a rational expression.
The correct answer is: We have to state the domain of a rational expression while simplifying them because we are cancelling expressions which are common to numerator and the denominator and because that expression is in denominator, we must exclude its zero as dividing with zero is not defined.
Step 1 of 1:
We have to state the domain of a rational expression while simplifying them because we are cancelling expressions which are common to numerator and the denominator and because that expression is in denominator, we must exclude its zero as dividing with zero is not defined.
In mathematics, division by zero is not possible, that is, it’s not defined.
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