

Add:
For which x-value is the expression undefined?:
Subtract:
For which x-value is the expression undefined?:
Add:
What is one x-value for which the expression is undefined?:
What is another x-value for which the expression is undefined?:
Add:
What is one x-value for which the expression is undefined?:
What is another x-value for which the expression is undefined?:
Subtract:
What is one x-value for which the expression is undefined?:
What is another x-value for which the expression is undefined?:
Subtract:
What is one x-value for which the expression is undefined?:
What is another x-value for which the expression is undefined?:
Add:
What is one x-value for which the expression is undefined?:
What is a second x-value for which the expression is undefined?:
What is a third x-value for which the expression is undefined?:
Add:
What is one x-value for which the expression is undefined?:
What is another x-value for which the expression is undefined?:
Add:
What is one x-value for which the expression is undefined?:
What is a second x-value for which the expression is undefined?:
What is a third x-value for which the expression is undefined?:
Subtract:
What is one x-value for which the expression is undefined?:
What is a second x-value for which the expression is undefined?:
What is a third x-value for which the expression is undefined?:
Simplify:
Simplify:
Simplify: