Main content

# Unit: Series

Not feeling ready for this? Check out Get ready for Precalculus.

### About this unit

This unit explores geometric series, which involve multiplying by a common ratio, as well as arithmetic series, which add a common difference each time. We'll get to know summation notation, a handy way of writing out sums in a condensed form. Lastly, we'll learn the binomial theorem, a powerful tool for expanding expressions with exponents.### Learn

### Practice

### Learn

### Practice

### Learn

### Practice

### Learn

### Practice

Test your understanding of

**Series**with these 9 questions.