Find the integral ((x^2)/(xsinx+cosx)^2)dx
WA is virtually useless in this case because it won't show the steps.
The way I would go about it, is by looking at the function, with that square in the denominator, it might be a quotient rule derivative.
So differentiate $\displaystyle \displaystyle \begin{align*} \frac{f}{x\sin{x} + \cos{x}} \end{align*}$ and set it equal to the integrand, and see if you can evaluate $\displaystyle \displaystyle \begin{align*} f \end{align*}$.