Step-by-step explanation:

Square both sides of the equation.


Answer: (not enough information) Is there a picture that goes along with the problem?
Step-by-step explanation:
Edit your question so we know what you are asking
There are 9 possible combinations, because you can have 3 main dishes, and each of thise have 3 side dishes that can go with them. I hope this helps! Could I possibly get brainliest.