ur question is vague. it really depends on wht the question is. u can square both sides if ur solving an equation wid root under it. if u post the question here, i would be more than happy to help.
Well it depends. there are several shorthand formulas that you can use, I recommend to look under Math, algebra and Exponents.... but if you came across a specific question. I will be more than happy to assist.Kamel
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