They look like this a + ib, and you got this.
Practice problems: https://docs.google.com/document/d/1EreYcqSCdGi80RnNjGDf0O4u2jqfR2RF_KinO7JD_l8/edit?tab=t.0
Solutions (odds): https://docs.google.com/document/d/1bwlR9NMHvrFWmLw0XN627axwOihM4qDQvRc0QLpBIUM/edit?usp=sharing
Solutions (evens): https://docs.google.com/document/d/13DH2dPDBjNgABsRRLtQOxFUtyYsTPCrzqdWasDAU7fg/edit?usp=sharing
Other videos involving imaginary numbers:
What Are Imaginary Numbers?: https://www.youtube.com/watch?v=JEwmObpQoEE
Simplifying Square Roots using the Imaginary Number: https://www.youtube.com/watch?v=I5B7xzQSls0
Quadratic Equations with Complex Solutions: https://www.youtube.com/watch?v=DY3tfZ4-rBE
https://www.mathwithmiller.org/