Kenneth S. answered 02/20/16
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
I recommend replacing every radical [e.g. nth root of a monomial] by said monomial to the 1/n power.
Working with fractional exponents VASTLY simplifies most of the classical exercises that one finds in an Algebra book. Use of fractional exponents becomes a vital algebraic skill in Calculus.
The concept of rationalizing a denominator can be treated in the following way: Said irrationality stems from the fact that the exponents in a monomial are fractional; the act of rationalizing the denominator becomes simply the act of multiplying both top & bottom of the quotient by whatever power needed to bring the exponent up to the next integer. [E.g. 1 over cube root of x needs multiplication of numerator & denominator by x to the two thirds.]