13 indices 8 class
TRANSCRIPT
Revision Revision Formula Formula--
1. 1. a×a×a×a×a×aa×a×a×a×a×a=a⁶=a⁶
2. 2. a �×aa �×ann =(a)=(a)m+n m+n
There are two ways to write the square root of a number :By using the symbol ‘√ ’ and by writing ½ as the index of the number. For example ,
The square root of 49 ‘ can be written as,√49 or 49½ .
There are two ways to write the square root of a number :By using the symbol ‘√ ’ and by writing ½ as the index of the number. For example ,
The square root of 49 ‘ can be written as,√49 or 49½ .
The index ½ represents the square root of a number & the index 1/3 represents the cube root of the number.
For example,1. 81/2 =The square root of 8= √8.
2. 125⅓= The cube root of 125= 3√125.
B) Rules of indices
The rules that apply to number with natural number indices also apply to numbers with fractional indices. You will understand this from the following solved examples.