The following definite integral can be evaluated to give the answer A - B where A and B are found from substituting the limits of integration.

What are A and B?

Having a difficult time showing how to integrate this to get the answer

3ln(7x^2 + 5x + 3). The denominator can be represented by u and du would be 14x + 5. With this, I divide and multiply it all by 14 I believe to get the 3 thats in the answer. This will give me the integral of 3/u. According to integration rules, 1/u is equal to the ln of u. Thus i get 3ln(u) and sub back in the original values. Then you evaluate at 3 and 0 to get A and B. Is this correct? If it doesnt make sense then let me know I can try to clarify. Thankss!