Can you help I have tried 4 times
Because they act like a face that provides recognition to the shape.
Answer:

Step-by-step explanation:
Call 
Now, 

This is the inverse of the given function.
You can cross - verify it by substituting a point, say, 
We see that the point satisfies both the equations.
Answer:
1 is the common factor of every term
Step-by-step explanation: