Precalculus Examples

Step 1
Cancel the common factor of .
Tap for more steps...
Step 1.1
Cancel the common factor.
Step 1.2
Divide by .
Step 2
To find the holes in the graph, look at the denominator factors that were cancelled.
Step 3
To find the coordinates of the holes, set each factor that was cancelled equal to , solve, and substitute back in to .
Tap for more steps...
Step 3.1
Set equal to .
Step 3.2
Add to both sides of the equation.
Step 3.3
Substitute for in and simplify.
Tap for more steps...
Step 3.3.1
Substitute for to find the coordinate of the hole.
Step 3.3.2
Tap for more steps...
Multiply by .
Add and .
Step 3.4
The holes in the graph are the points where any of the cancelled factors are equal to .
Step 4
Enter YOUR Problem
Mathway requires javascript and a modern browser.