Oh, if you need to check your solution, you can always try this out:

http://www.hostsrv.com/webmab/app1/M...solve&s3=basic

Works really well up to exact fourth-grade solutions. If you want to see how good it really is, try solving this equation for x:

7a^4+17x^4+7x^3+17x^2+7x+7a^3=7

It might take a while, but the results are impressive.

Of course, if you have a lot of homework on a really tough equation to deal with, you can always use this web-based equation solver and check everything step-by-step to see if you're still on-track. If you suddenly get a bunch of strange square and cube roots all over the place, you might, for instance, have messed with the denominator a bit too much, so go back a step and try something else.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram