Bro Smoody
Period 6*
Mr. Swiggersp
April 28, 2015
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An exponent is something that raises a number or a variable to a power. It is a process of repeated multiplication. For example, the expression means to multiply 2 times itself 3 times or . In , the 2 is called the base and the 3 is called the exponent. Both the base and the exponent can be either a number or a variable.
Each of the following is an example of an exponential expression.
When both the base and the exponent are numbers, we can evaluate the expression as we did with . If either the base or the exponent is a variable, we need to be given additional information in order to make a numerical evaluation.
One type of exponent that was not used in the previous list of exponential expressions was a negative exponent. When dealing with a negative exponent, we have a rule to follow. The rule says:
In other words, when there is a negative exponent, we need to create a fraction and put the exponential expression in the denominator and make the exponent positive. For example,
But working with negative exponents is just rule of exponents that we need to be able to use when working with exponential expressions.
Rules of...