You can put this solution on YOUR website!
An expression such as this is said to be "undefined" if the denominator is equal to zero.
Why, because when the denominator is zero, you are then, in effect, dividing the numerator by zero and division by zero is "undefined" and thus not permitted.
Thus, you need to find what value(s) of the variable, w, would make the denominator equal zero. One simple way to do this is to set the denominator equal to zero and solve for the variable, w.
Solve for w. Subtract 9 from both sides.
Now divide both sides by 5 to isolate the variable.
So when w =
, the given expression becomes...