Answer:I \Explanation:
i thiink nouns but show me the multiple choice or something
You just do what it says, combine like terms so if there is more than one number squared just add up the numbers.
You also what to put them in order for the biggest number to the smallest so if there’s squared cubed and Normal number you want to put it in the exact order I gave you.
So first let’s combine.
-20a^2 + 40a^2 = 20a^2
5b + 35b + 2b = 42b
-15c
Therefore this is the answer.
20a^2 + 42b - 15c
To narrow down the focus of your topic, follow the following three steps: Write down additional specific about your topic. Example: brewing quality tasting beer and the health of the colonies of yeast used to brew small batches of beer properly. Turn your topic into a sentence that is a statement.