12x11 + 2x x12 + x dx Step 1 Notice that the numerator is the derivative of the denominator. Thus the integral is of the form Formula for integrals. Su dx = st Let u=x u and du. 12 du = In|u| + C +x2 and du = (12x11 + 2x)dx 12x11 + 2x dx = x12+ + x2 - In|x12 + x | +4 c 0 dx. Use the Logarithmic dx. Substitute these values to write the integral in terms of