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Simple expression

  • Thread starter alpha01
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  • #1
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can someone please show how 2/5(sqrt(3)^5) = 18sqrt(3) / 5

thanks
 

Answers and Replies

  • #2
cristo
Staff Emeritus
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Can you write [tex]\sqrt{3}^5[/tex] as [itex]3^n[/itex] for some rational, n?

I'm moving this to precalc HW forum.
 
  • #3
77
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no, i cant find n.

also, this isn't a homework or school related question. I cant see why a warning was necessary.
 
  • #4
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[tex]\sqrt{3}[/tex] is three raised to what power?
 
  • #5
CompuChip
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Homework Helper
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can someone please show how 2/5(sqrt(3)^5) = 18sqrt(3) / 5

thanks
You can also go the other way around, and divide out as much common terms from both sides as possible. Then see if you can prove the remaining identity.
 

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