It's not that hard to use LaTeX, and it's much more readable that what you have below. For me the limits of integration show up as a rectangular pattern of dots, like this: ▒.
Bring the constants out of the integral.
To see what I did in LaTeX, click the expression above.
After you make the substitution, use integration by parts twice. After you integrate, undo your substitution. Check your final result by differentiating - you should get back to the original integrand.