Can someone please explain it to me ASAP ??!! This is integral by parts

Use one of the reduction formulas shown to the right (which are valid for a # 0) to evaluate the integral below. [ x5 5 x dx (x" eax dy = *"eax a " fxn-1 eax dx S x" cos ax dx = x x" sin ax a " xn - 1 sin ax dx with n x " sin ax dx = - x" cos ax a " / x -1 cosax dx In " x dx = * In " x - n In " - 1 x dx [ x5 5x dx =