Question

PLEASE HELP!!!!!!

I really need help on this! It's due today and I'm kinda late on it!!

Answer 1

1.not 2×4 is 2+4 answer should be 6x⁶

2.not 3+4 is 3×4 answer should be 12a⁷

3.miss 1 should x^(6+1+3) should be x¹⁰

4.base different, and just become 81×8=648