Powers and roots
Indices – (or index) says how many times to use the number in a multiplication, called a POWER.
In the seas, (indices) remember who has the POWER.
Example 1
`5^4 = 5` to the power of `4`
`= 5\times5\times5\times 5 = 625`
Example 2
This is said to be `5` to the power of `2`. When a number is to the power of `2` it is said to be squared.
Example 3
This is said to be `4` to the power of `3` which is `4\times4\times4 = 64`.
Example 4
`9^(1/2)=sqrt9=3`
Here `9` is to the power of a half, which is the same as the square root, which in this case is `3`.
Example 5
`x^2`
This is `x` to the power of `2`. Which is `x` squared, which is `x\ times\ x`
