SOLUTION: This is very confusing to me and I need help, Please. Find the following. 20sqrt-2^20

Algebra ->  Radicals -> SOLUTION: This is very confusing to me and I need help, Please. Find the following. 20sqrt-2^20      Log On


   

Question 628473: This is very confusing to me and I need help, Please.
Find the following. 20sqrt-2^20
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: root%28n%2Cx%5En%29=abs%28x%29 where n is an even integer (ie even whole number)

Ex:
root%284%2C%28-10%29%5E4%29=abs%28-10%29=10

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the following. 20sqrt-2^20
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= 20*sqrt(-1)*sqrt(2^20)
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= 20*i*2^10
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= 20*1024i
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= 20480i
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Cheers,
Stan H.
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