Indices law - law 3

$a^(1/n)=\rootna$

$A fraction is a root$

To remember this try simple numbers you know first.

We know $4^(1/2)=sqrt4=2$

We can then apply this to all other examples:

Example 1

$10\^(1/2)=\root2\10=3.162$

Example 2

$9\^(1/2)=\root2\9=3$ $(3xx3 =9)$

The second root of $9=3$

(The second root is also known as the square root)

Example 3

$27\^(1/3)=\root3\27=3$ $(3xx3xx3=27)$

The third root of $27=3$

(The third root is also known as the cube root)