" (1.) "int(1)/(x^(2)+2x+5)dx

int(x-1)/(x^(2)-2x-5)dx

5. int(1)/(3x^(2)+2x+1)dx

int(2x+1)/(x^(2)+4x-5)dx

int (1)/(2x^(2)+3x-5)dx=

int(1)/(2x^(2)+5x+3)dx

int(1)/(2x^(2)+5x+3)dx

int(1)/((2x+3)^(2)(4x+5))dx=

int(1)/(x(5-2x^(2)))dx=

Evaluate the following integrals. (i) int 1/((x - 2)^2 + 1)dx " " (ii) int (x^2)/(x^2 + 5)dx " " (iii) int 1/(sqrt(1 + 4x)^2)dx