We square 5 to get 25 therefore 1 25 2 5 return to

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Unformatted text preview: st of the problems. 1 2 (a) 25 So, here is what we are asking in this problem. 1 25 2 = ? © 2007 Paul Dawkins 9 http://tutorial.math.lamar.edu/terms.aspx College Algebra Using the equivalence from the definition we can rewrite this as, ? 2 = 25 So, all that we are really asking here is what number did we square to get 25. In this case that is (hopefully) easy to get. We square 5 to get 25. Therefore, 1 25 2 = 5 [Return to Problems] 1 (b) 32 5 So what we are asking here is what number did we raise to the 5th power to get 32? 1 5 32 = 2 25 = 32 because [Return to Problems] 1 4 (c) 81 What number did we raise to the 4th power to get 81? 1 4 81 = 3 34 = 81 because [Return to Problems] 1 (d) ( -8 ) 3 We need to be a little careful with minus signs here, but other than that it works the same way as the previous parts. What number did we raise to the 3rd power (i.e. cube) to get -8? 1 ( -8 ) 3 = -2 because ( -2 ) 3 = -8 [Return to Problems] 1 (e) ( -16 ) 4 This part does not have an answer. It is here to make a point. In this case we are asking what number do we raise to the 4th power to get -16. However, we also kn...
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