Question

Help please. Evaluate the integral by making the substitution. The integral of (x+2)/(x^2+4x) dx u=x^2+4x

Answer 1

You can replace the x^2+4x in your integral for u, and derive u, du=2x+4dx; 2du=x+2dx

Answer 2

Then you can proceed to solve for your integral: \[\int \frac{2}{u}du\]