You can put this solution on YOUR website! Try these sites
http://www.wtamu.edu/academic/anns/mps/math/mathlab/int_algebra/int_alg_tut39_simrad.htm
http://hotmath.com/help/gt/genericalg1/section_8_1.html
http://www.algebralab.org/lessons/lesson.aspx?file=algebra_radical_simplify.xml
http://www.youtube.com/watch?v=hclSMThq8yE
http://www.youtube.com/watch?v=h5XXu1tijXo&feature=relmfu
http://www.youtube.com/watch?v=WTMIU7t3BZY&feature=related
And there are other youtube videos on that.
Edwin