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									Myanmar
CONTENTS

   Introduction

   Recall

   Rules of Exponents

   Rules of Radicals

   Exercise
At the end of the lesson the students will be able to

   - know the basic rules of exponents and radicals.

   - apply the basic properties and rules of exponents
     and radicals.

   - enhance students' deductive reasoning by solving
     the problem of exponents and radicals.

                            Grade-9, Secondary Level

                            45 minutes / Student-centred
   In general, if b is a real number and n is a positive integer,
then we may write-
                    b.b.b….b = bn
                     n factors

and call bn, the nth power of b.

exponent
                bn = the nth power of b
     base

 In b.b.b = b3, b3 is called the exponential form, b.b.b is called
 the factored form or exponded form.
   Rule 1.


           Rule of Multiplication
                       




                bm x bn = bm+n




Previous                            next
   Rule 2.


           Rule of Division

             bm
                  = bm-n
             bn


Previous                      next
   Rule 3.


       Rule of a Power of a Power

             ( bm )n = bmn




Previous                            next
   Rule 4.

           Rule for Exponents
               (b1/n)m = bm/n




Previous                        next
   Rule 5.

           Rule for Radical

                         n           n   ab
             n   a   x       b   =




Previous                                      next
   Rule 6.


           Rule for Radical
                   ÷ n       =   n   a ÷b
           n   a         b




Previous                                    next
                                  EXERCISE
Choose the correct answer.

 1. ( 2 )3  2  ?

      A. ( 2 )3  1      B. ( 2 )3  2


      C. (   2 )3  0    D. ( 2 )3  3


                             Previous    Next
Choose the correct answer.
     12
    a
 2. 6      ?
    a
      A. a4         B. a2

     C. a6          D. a8

                             Previous   Next
Choose the correct answer.

3. ( 5 )3  ( 25 )  ?

      A. ( 5)3  1       B. ( 5)3  0


      C. (   5)3  2     D. ( 5)3  3

                             Previous   Next
Choose the correct answer.
     8
    a
 4. 2  ?
    a

      A. a7         B. a6

      C. a2          D. a4

                             Previous   Next
Choose the correct answer.
          2
5. (32)       5    ?


      A. 4              B. 2

      C. 6              D. 8

                               Previous   Next
Choose the correct answer.

 6. ( 25 )  ( 4 )  ?

         2             4
      A.            B.
         5             5

        5              1
     C.             D.
        2              2

                             Previous   Next
Choose the correct answer.

 7. (a 3  a) -2  ?

     A. a- 7        B. a- 8


     C. a9          D. a8

                             Previous   Next
Choose the correct answer.
           2
 8. (27)       3    ?


      A. 3               B. 6

      C. 9               D. 7

                                Previous   Next
Choose the correct answer.

 9. ( 9 )  ( 16 )  ?


      A. 12         B. 10

      C. 6           D. 9

                             Previous   Next
Choose the correct answer.

10. ( 3 27 )  ( 3 125 )  ?

            5                         3
         A.                        B.
            3                         5

            2                         5
         C.                        D.
            5                         2

Click on the button to process the exercise.   Previous   Next
http://www.math.com/school/subject2/lessons/S2U2L2GL.html
 The given URL is the starting place, feel free to
 search the Internet for other related information


         THANK YOU

       Daw Khin Ma Gyi

       Senior Teacher

  B.E.H.S (2), Dagon.
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