∫dx/√{x^2 + 6x + 5}

Question

\(\int\frac{dx}{\sqrt{x^2+6x+5}}\) = ?

∫dx/√{x² + 6x + 5}

A. log | x + \(\sqrt{x^2+6x+5}\)| + c

B. log | x - \(\sqrt{x^2+6x+5}\)| + c

C. log | (x + 3) + \(\sqrt{x^2+6x+5}\)| + c

D. none of these

Answer 1

\(\int\frac{dx}{\sqrt{x^2+6x+5}}\) = \(\int\frac{dx}{\sqrt{x^2+6x+5+9-9}}\)