The multiplicity of a zero corresponds to the number of times a factor is repeated in the function. $\cdot$ Odd multiplicity: cross the x-axis $\cdot$ Odd multiplicity (3 or more): changes concavity when passing through x-axis $\cdot$ Even multiplicity: bounces off the x-axis

Repeated factors (Multiplicities) in polynomials

Don't just watch, practice makes perfect.

We have 1040 practice questions in Algebra 2 for you to work through.