Indice rules

WHAT ARE INDICES?

Indices and numbers which are in index form such as...

3³ = 3×3×3
2¹ = 2
2² = 2×2
2³ = 2×2×2

There are certain rules which are used to work out how to simplify indices.   

These rules may look complex but if you follow the rules it is actually really simple.

For example what is 15² x 15³ ?  You don't even need to know what 15 squared or cubed is you just use the first rule.  and 2+3=5 so the answer is 15^5.  

Dividing is just the same apart from you subtract the powers.

Anything to the power of -1 inverses it.  You find what is called the reciprocal of it.  

For example the reciprocal of a quarter is 4 because it is the same as four over 1

1 4   to  4 1

^{Remember that anything to the power of 0 is always 1!}