1. Sep 10, 2006

### Mach

Determine a polynomial or rational algebraic expression in simple form equivalent to each of the following: C3

1+(a+a^-1)^-1

Last edited: Sep 10, 2006
2. Sep 10, 2006

### quasar987

Each time you encounter addition of fraction, put them on the same denominator. In the end, you'll have (somthing)/(something), which is the goal of the exercice.

3. Sep 11, 2006

### HallsofIvy

Staff Emeritus
Do you know what a-1 means?

4. Sep 11, 2006

### Mach

yes i do it means 1/a

i just cant get the answer. i have to go to school now so ill post my work when i get home