evaluate the integral by completing the square and using trig sub:

Question

anonymous · Answer

The function?

cherrilyn · Answer

$$\int\limits_{?}^{?}\sqrt{(x ^{2}-4x+7)dx}$$


and $$\int\limits_{}^{?} dx/(x ^{2} +6x + 6)^{2}$$

cherrilyn · Answer

for the first one I know the completed square is (x^2-4x+4)-4+7
so I get (x-2)^2+3

cherrilyn · Answer

then I go all the way down to u sub which leads me to $$\int\limits_{}^{}\sqrt{u ^{2}+3}du$$

anonymous · Answer

You would get better help if you pose one quetion at a time. Or else results become difficult to follow. So which one are you working on?

cherrilyn · Answer

the first one

anonymous · Answer

cherrilyn · Answer

thanks!! :D