I have a couple of problems I haven't been able to work out correctly...
1.
I am confused because of the negative exponents in this problem:
t^-6 (2t)^3
------------
t^3
2.
(x^4 + 4x^2 - 5x + 3) - (2x - 5)^2
If anyone could help me with these asap, that would be great! Thanks.