You did not include the context in which your question was asked so I cannot help you with this. If you were to add some context, then I'll try my best to help you! :)
It's C becasue 3 is supose to be going over to the right not up
Answer:
=42x2+1
Step-by-step explanation:
6x2+36x2+12x+6
=42x2+1
6-6+7=22
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