I supposed to integrate (x^2 + x)^(1/2).

I do it this way

int (x^2 + x)^(1/2) = x(x^2 + x)^(1/2) - 1/2* int (x(2x + 1))/(x^2 + x)^(1/2) = x (x^2 + x)^(1/2) - 1/2((xln(x^2 +x)) - ln(x^2 + x))

IF u now take 2pi ((x = 1) - (x = 0)) u are supposed to get

pi(6(2)^(1/2) - ln(3 + 2(2)^(1/2)) / 4

And i dont get it, so i wonder what im doing wrong.