Introduction
Powers
are used when we want to multiply a number by itself repeatedly.
1. Powers
When we
wish to multiply a number by itself we use powers.
For
example, the quantity 74= 7 × 7 × 7 × 7 is usually written as 74. The
number 4 tells us the number of sevens to be multiplied together. In this
example, the exponent, or index, is 4. The number 7 is called
the base.
Example
62
...