1. + 7.2 The Real nth Roots of a Number

2. + 1. How many values in the domain of f are paired with the value in the range? That is, how many x values satisfy the equation ?

3. + 2. How many values in the domain of g are paired with the value in the range? That is, how many solutions are there of the equation ?

4. + 3. How many values in the domain of h are paired with the value in the range? That is, how many solutions are there of the equation ?

5. + Definition: Each solution of the equation, for n a positive integer, is called an. Thus, 3 and -3 are the 2 nd roots (or square roots) of 9, and -2 is the 3 rd (or cube) root of -8. nth root of b

6. +

7. + Solve over the real numbers. 4.5.

8. + The symbol is called a ; b is called the and n the. We say this as the nth root of b. if n is odd if n is even radical radicand index

9. + Find all real values for which the statement is true. 6.7.