"` (2) "int((x+1))/(x^(2)+2x+1)dx`

9*int(x+1)/(x^(2)+2x+1)dx

int((x-1))/((x-1)^(2)(2x+3))dx

int(3x+1)/(2x^(2)+x-1)dx

int(4x+1)/(2x^(2)+x+1)dx

int((2x-1))/(sqrt(x^(2)-x-1))dx

int(2x+1)/(x^(2)+x+1)dx

(i) int((x^(2) - 1)/(x^(2) + 1))dx , (ii) int ((x^(6)- 1)/(x^(2) + 1))dx (iii) int ((x^(4))/(1+x^(2)))dx , (iv) int((x^(2))/(1+x^(2)))dx

int(x^(2)+x+1)/(x^(2)-x+1)dx

int(x+1)/(sqrt(x^(2)+2x+1))dx=

int(2x-1)/(x-2)dx