You do not. If you do, the expression is undefined: it has no value.
Chat with our AI personalities
zero equals zero
When the denominator is equal to zero, the expression is undefined. Close to those places, the expression tends towards plus infinity, or minus infinity. In other words, setting the denominator to zero will tell you where there are vertical asymptotes.
It is a fraction in rational form.
If they are both zero, the the fraction is undefined. Otherwise it means that the ratio is equal to one.
The denominator of any number cannot be zero because division by zero is not defined.