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schadie
What is the solution of Integral : (x²+4x)/sqrt(x²+2x+2) Do not use an integral calculator, please help !!
Do you know how to integrate by first using a trig sub?
Try to write the thing in the radical as a sum of squares and pick your trig sub based on that. Let me know what you choose it to be.
hint: \[\Large \cosh^2 \alpha-\sinh^2\alpha=1\] The hyperbolic trigonometric Pythagoras. Hopefully it will make your life a bit easier after completing the square.