I forgot how to do these kinds of problems. Could someone please show me how to find this integral (http://www.wolframalpha.com/input/?_=1322280641770&i=integrate+sqrt%2872^2t^4+%2b+48 ^2t^2%2b16^2%29&fp=1&incTime=true) ? Wolfram Alpha doesn't show me the steps for this; it just gives a final answer.

Any help would be greatly appreciated!

Thanks in advance!