Hello. I have two super fun problems for you guys to try and solve. I tried them both but my answers were not right.

$\displaystyle 2e^{4-x^2}-4ln(x^3+5)$

Answer is supposed to be $\displaystyle -4xe^{4-x^2} - \frac{12x^2}{x^3+5}$

and

$\displaystyle 2y^3+x^2y^2=5x-y-1$

This one is suposed to be $\displaystyle \frac{1}{3}$

If you could be so kinds as to show me your steps I would greatly appreciate it. I think i might be messing up my simplification on the first one i tried it 3 times and i got the same answer all 3 times but its wrong according to the key and I doubt my physics prof is wrong. The 2nd one makes me want to cut myself