1.4: Defining a Power

by Judy - Ling Hing Published

Exponential Notation:

ex. 2x2x2x2x2 = 25

ex. 2x2x2x2x2x2= 26

ex. 2x2x2x2x2x2x2= 27 

Notes:

  • Even number of negative signs= positive number
  • Odd number of negative signs= negative number
  • –26 is ONLY putting the ‘2’ to the power of 5, NOT the negative. Therefore, the answer would still be negative because (-)(2)(2)(2)(2)(2)(2) = -64
  • (-2)6 is putting BOTH the ‘2’ AND the ‘-‘ to the power of 6. Therefor, the answer should be positive because (-2)(-2)(-2)(-2)(-2)(-2) has 6 negative signs, and 6 is a even number.
  • ANYTHING to the power of ‘0’ equals ‘1’
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