x^8 / x ^4 =

x^2 is this right

-12x^4/3x = -4x^3 is this correct

4 answers

yes it is if x does not equal to 0.
No. It isn't right. You subtract exponents when you divide different powers of the same number.
Your first answer is wrong; the second is correct. I did not notice the second question
And me I didn't notice the first one :)