anonymous
  • anonymous
Simple algebra question (if even that advanced). Expand: (x+ 2) / sqrt(x) I know the answer is sqrt(x) + 2/sqrt(x) but I really have no idea how that answer was achieved. Any help is appreciated.
Mathematics
chestercat
  • chestercat
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hoblos
  • hoblos
(x+ 2) / sqrt(x) = x/sqrtx + 2/sqrtx = sqrtx + 2/sqrtx
anonymous
  • anonymous
\[\frac{x+2}{\sqrt{x}}\]?
anonymous
  • anonymous
Yes

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anonymous
  • anonymous
Alright, how the heck is \[x/\sqrt{x} = \sqrt{x}\] ?
hoblos
  • hoblos
x/sqrtx = x/x^1/2 = x * x^-1/2 = x^1/2 = sqrtx
anonymous
  • anonymous
Ha, thanks. I mean, I'm taking Calculus II and stuff like this sometimes gets me. Maybe I need to go back to developmental math :)

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