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The Sec^2 (x) -1 = (Sec(x)+1)*(sec(x)-1)
Thus you now have:
((sec(x)+1)(sec(x)-1))/(sec(x)-1)
the (sec(x)-1) cancels out on bottom and top leaving you with:
(sec(x)+1)
That is the most straightforward way to do this problem I believe. Hope that helps...
P.s. (the 2 being an exponent was very key to the problem, you probably should have emphasized that more, I was lucky I read the last line)(oh and I like paranthesies (obviously), they really help in math problems).
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