Answers

2014-09-20T16:36:10+08:00
100
  ^
2 50
    ^
  2 25
      ^
    5 5
100-2x2x5x5
100-2²x5²
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2014-09-24T13:32:46+08:00
Example of power of a power
               ( a²)³ means        a² . a² . a²  = a⁶
a faster way is just multiply 2 by 3 = 6
so the answer is also    a⁶
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