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Unformatted text preview: ow that raising any number
(positive or negative) to an even power will be positive. In other words, there is no real number
that we can raise to the 4th power to get -16.
Note that this is different from the previous part. If we raise a negative number to an odd power
we will get a negative number so we could do the evaluation in the previous part.
As this part has shown, we can’t always do these evaluations.
[Return to Problems]
1 (f) -16 4
Again, this part is here to make a point more than anything. Unlike the previous part this one has
an answer. Recall from the previous section that if there aren’t any parentheses then only the part
immediately to the left of the exponent gets the exponent. So, this part is really asking us to
evaluate the following term. © 2007 Paul Dawkins 10 http://tutorial.math.lamar.edu/terms.aspx College Algebra 1
-16 4 = - ç16 4 ÷
ø So, we need to determine what number raised to the 4th power will give us 16. This is 2 and so in
this case the...
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This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.
- Spring '12