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Exponents
For any real number ' a ' and any positive integer n we define as :
Here ,
- is called the nth power of a.
- The real number a is called the base and n is called the exponent of the nth power of a .
Laws of Exponents :
If a ,b are positive real numbers and m,n are rational numbers ,then .
More About this topic :
• Principal nth root of a negative real number
if a is a negative real number and n is an odd positive integer .Then ,the principal nth root of a is minus the principal and root of |a|.
Example :
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