Sorry for all the questions. I missed the lecture and do not understand how to solve these problems. Please help asap. Thank you.

1. [-/0.71 Points] DETAILS 50/6 Submissions Used MY NOTES Consider the indefinite integral / x4(6 + 4x5) 8 dx. (a) The most appropriate substitution is u = (b) After making the substitution, we obtain the integral du . (c) Solving this integral (in terms of u) yields + C. (d) Substituting for u we obtain the answer / x4(6 + 4x5)8 ax = + C. Submit Answer 2. [-/0.71 Points] DETAILS 2.002. 0/6 Submissions Used MY NOTES Consider the indefinite integral 9 x6 - dx. (Remember to use absolute values where appropriate.) 12x7 - 8 (a) The most appropriate substitution is u = (b) After making the substitution, we obtain the integral du. (c) Solving this integral (in terms of u) yields + C. (d) Substituting for u we obtain the answer 9x 6 dx = + C. 12x7 - 8 Submit Answer 3. [-/0.71 Points] DETAILS -003. 0/6 Submissions Used MY NOTES Evaluate the indefinite integral. (Remember the constant of integration.) (x2 - 8)6(2x) dx = Submit Answer 4. [-/0.71 Points] DETAILS .2.004. 0/6 Submissions Used MY NOTES Evaluate the indefinite integral. (Remember the constant of integration.) 10(x - 9)5 dx = Submit Answer 5. [-/0.71 Points] DETAILS 2:005. 0/6 Submissions Used MY NOTES Evaluate the indefinite integral. (Remember the constant of integration. Remember to use absolute values where appropriate.) x 4 - dx = +1 Submit Answer 6. [-/0.71 Points] DETAILS 2.006. 0/6 Submissions Used MY NOTES Evaluate the indefinite integral. (Remember the constant of integration.) ( In (x) )" dx = Submit