Solve the equation.             

Add.                

Find the domain for the following function.          

Use the quadratic formula to solve the equation.               

Solve the equation.               

Express the radical in simplest form.                

Add.  Leave the answer in simplest form.                   

The password for Exam 1 is `  `. Submission must be exact to gain access to the exam.

Simplify the expression.                        

Why is water a unique/remarkable molecule?