AriPotta
  • AriPotta
sorry @Hero, but can you help again?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
47/7 = 7. That means that √49 is 7. That makes the answer 7/√2
Hero
  • Hero
@Bladerunner1122, there's more to it than you think.
Hero
  • Hero
No, it's not that simple unfortunately

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anonymous
  • anonymous
oh?
anonymous
  • anonymous
Enlighten me.
Kainui
  • Kainui
Technically you're not completely wrong, but it's nicer to multiply by sqrt(2)/sqrt(2) to get the radical out of the denominator.
Hero
  • Hero
The fraction is not in simplest form. You have to rationalize like what @Kainui is suggesting.
anonymous
  • anonymous
OH! yeah. but the answer format requires it in.
Kainui
  • Kainui
You can multiply by sqrt(2)/sqrt(2) since it equals 1, and you can multiply anything by 1 without changing it.
anonymous
  • anonymous
I know, but original question has the answer selection has the √2 in the denominator.
Hero
  • Hero
@AriPotta, that's not what I got when I multiplied
anonymous
  • anonymous
Oh darn it. I'm totally wrong. xD
Hero
  • Hero
\[7 \times \sqrt{2} = 7\sqrt{2}\] \[\sqrt{2} \times \sqrt{2} = 2\]
anonymous
  • anonymous
Mhmm... I got √(2x7x7) / 2 = 7√(2) / 2
anonymous
  • anonymous
yes
AriPotta
  • AriPotta
mmk. thanks guys :)
anonymous
  • anonymous
Sorry for the confusion. xD

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