Can someone Help me with these questions?

Question 1:

Evaluate the integral. (Remember to use absolute values where appropriate. Use C for the constant of integration.) Iii/36+)? dx X S Evaluate the integral. 4 dt 2V/Z 12 - 4Evaluate the integral. (Use C for the constant of integration.) dx if x2 + 25 E Evaluate the integral. (Remember to use absolute values where appropriate. Use C for the constant of integration.) do E_ /UV"6 u2 S Evaluate the integral using the indicated trigonometric substitution. (Use C for the constant of integration.) dx x2. x2 - 81 , x = 9 sec(0)