More importantly WA is Mathematica Lite. We have a site license for Mathematica at Northwestern but the convoluted process to download it dominates its value to me. But I can just simplify and maximize directly into WA. solve x=4y^2-7, y=x+5 gives clean solutions. I had a little trouble maximizing probabilities with max p(1-2p) but change p's to x's and everything works fine. It solves all my daughter's homework questions on solving quadratic equations and simplifying radicals (but she's smart enough to know not to use it).
So kudos to Wolfram for producing something useful and free. Hope he keeps it that way.