Integal 1 per xpangkat2+2x+1 dx soal no 1a, lebih jelasnya ada di lampiran tolong dong kaka

int [1/(x² + 2x + 1)] dx
= int [1/(x + 1)²] dx
u = x + 1
du = dx
= int (1/u²) du
= int u^-2 du
= -u^-1 + c
= -1/u + c
= -1/(x + 1) + c