Please help!

Question

int(4x + 4)*ln(x^2 + 2x)/(x^2 + 2x)?

Answer 1

Given function : ∫ (4x + 4)ln(x² + 2x)/(x² + 2x)

Let x² + 2x = t

(2x + 2) dx = dt

Let ln(t) = u

(1/t)dt = du

Substitute u = ln (t)

Substitute t = x² + 2x