Integrate the functions.

Let 5x - 2 =

5x - 2 = A(2 + 6x) + B


Now, equating the coefficients of x and constant term on both sides, we get,


6A = 5


A =


2A + B = -2


B =


5x - 2 = (2 + 6x) +




Now,


Let 1+2x+3x2 = t


(2 + 6x)dx = dt



= log|1+2x+3x2| …(1)


And


1+2x+3x2 =






…(2)


Thus, from (1) and (2), we get,




19