Evaluate ∫xexdx\int x e^x dx∫xexdx.
xex+Cx e^x + Cxex+C
ex(x−1)+Ce^x(x-1) + Cex(x−1)+C
ex(x+1)+Ce^x(x+1) + Cex(x+1)+C
ex+Ce^x + Cex+C