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Workbook

 x  m   y m y m
Remark:       if x  0 and y  0


 y   x  x m

Example 10:

 2 2
 4   9  81
a)      
 9   4  16

5 3
b) 
5 2

Addition – Subtraction of Powers:

m
m
Symbols: xa. m  b. x  c. x  a  b  c  x. m

Example 11 : Write each expression given below in simplest form.

a) 5 n 1 5 n 1 5 n 1 

b) 4 9  4 8  4 7 

c) 5 x 5 5 x 4 5 x 3 

49 091math-wb-w6-(equations&inequalities-1)