Could really use some Calculus help!!!!

[97SVT#777]

I have a few problems in my Cal II class that I can't even begin to work out. This is driving me crazy. If anyone could help me out with a problem or two I would greatly appreciate it.

1. Integrate (x^3)/(sqrt(x^2 +4)dx

2. Integrate (x)/(x^2 -4x+4)dx

3. Integrate (x)/(sqrt(2+3x)dx

4. Integrate (ln(ln x))/(x ln x)dx

 

[roushcobra2003]

LOL, I had that during the second week of calc 2. I wish I can show you, but I have no idea how to do it on the computer.

 

[bit]

1. ((x^2-8)*sqrt(x^2+4))/3
2. ((x-2)*ln(abs(x-2))-x)/(x-2)
3. (2*(3x-4)*sqrt(3*x+2))/27
4. ((ln(lnx)))^2)/2

Just the answers, its all I have time for at the moment. I hope that helps.