Fractional Exponents
 To enroll in any of our courses, click here

 Fractional Exponents: Exponent means how many times a number is repeated in multiplication. A fraction having exponent form and following rules which is followed by the integers. A fractional exponents form is 1/n. Fractional exponents can be used instead of using the radical sign (). General Formula of Fractional Exponent: The n-th root of a number can be written using the power 1/n, as follows:        a1/n = na
 People who saw this lesson also found the following lessons useful: Factoring Quadratic Equations Probability- Examples Quadratic Equations: Nature of Roots Grouped Data Arithmetic Mean Circle- Example
 Example: If y = 31/3 + 1/(31/3), show that 3y3 - 9y = 10. Solution: Let a = 31/3Then a3 = 3      .......(i) and b = 1/(31/3) Then b3 = 1/3          .......(ii) Also, ab = [31/3] [1/(31/3)] = 1          .......(iii) a + b = y                                          ......(iv) y = 31/3 + 1/(31/3) = a + b y3 = (a + b)3 = a3 + b3 + 3ab(a + b) Using (i), (ii), (iii) and (iv) here, you get y3 = 3 + 1/3 + 3(1)(y) Multiplying both sides with 3, you get         3y3 = 9 + 1 + 9y       3y3 - 9y = 10.(Proved.)

 As many of you know, Winpossible's online courses use a unique teaching method where an instructor explains the concepts in any given area to you in his/her own voice and handwriting, just like you see your teacher explain things to you on a blackboard in your classroom. All our courses include teacher's instruction, practice questions as well as end-of-lesson quizzes for practice. You can enroll in any of our online courses by clicking here. The format of Winpossible's online courses is also very suitable for teachers who are using an interactive whiteboard such as Smartboard on Promethean in their classrooms, because the course lessons can be easily displayed on such interactive whiteboards. Volume pricing is available for schools interested in our online courses. For more information, please contact us at educators@winpossible.com.

 Copyright © Winpossible, 2010 - 2011 Best viewed in 1024x768 & IE 5.0 or later version