Deeanna225
Deeanna225
24-09-2014
Mathematics
contestada
|-4b-8| |-1-b^2| 2b^3;b=-2
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Illuminati750
Illuminati750
24-09-2014
Hello,
We know that:
|a|=a
|-a|=a
then:
[tex]|-4b-8|*|-1-b^2|*2b^3 \\ \\ Replacing: \,\,b=-2 \\ \\ = |-4(-2)-8|*|-1-(-2)^2|*2(-2)^3 \\ =|8-8|*|-1-4|*2(-8)\\ =|0|*|-5|*(-16) \\ =5*(-16) \\ \boxed{=-80}[/tex]
Answer: -80
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