∫ (3x^2 + 6x - 4) dx
like last time, but more
x^3 + 3x^2 - 4x + c
use the power rule, so for instance
∫ 3x^2
increase the exponent by 1
3x^3
now divide by the exponent
3x^3 / 3
simplify
x^3
∫ 6x
increase the exponent by 1, 1 + 1 = 2
6x^2
and divide by the exponent
6x^2 / 2
3x^2