pleas help on the second ASAP it was due yesterday.. i dont even understand how to do any of it and i will give brainliest <3

Answer:
[tex]3x^{4}[/tex]
Step-by-step explanation:
I suggest looking lessons on it online if you don't understand... It's hard to do your work especially if you don't understand it. Or if your online, go to past lessons or something.