A website devoted to college entrance exams has put out a piece about fractional exponents. The author states that college entrance exams are often written to render using a calculator ineffective when it comes to fractional exponents. The author states that the student has to know her formulas for exponents and roots. She gives an example, comparing the math problem to a plant. She goes ahead and solves the problem. She invites readers to look at similar tips in an embedded link.
Read more: ACT and SAT Math Tips: Fractional Exponents