anonymous
  • anonymous
how do you simplify radical fractions??
Mathematics
katieb
  • katieb
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Diyadiya
  • Diyadiya
Question ?
anonymous
  • anonymous
|dw:1327859736338:dw|
Diyadiya
  • Diyadiya
\[y= \frac{10}{\sqrt2}\] Do you need to simplify this ? or what do you have to finnd?

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anonymous
  • anonymous
I need to simplify it
Diyadiya
  • Diyadiya
\[\frac{10}{\sqrt2}= \frac{2 \times 5 }{\sqrt 2 } = \frac{\sqrt{2} \times \sqrt{2} \times 5 }{\sqrt{2}}=\frac{\cancel {\sqrt{2}} \times \sqrt{2} \times 5 }{\cancel{\sqrt{2}}}= 5\sqrt{2}\]
anonymous
  • anonymous
where did you get the \[\sqrt{2} \times \sqrt{2} \times 5 \] from?
Diyadiya
  • Diyadiya
\[2 = \sqrt{2} \times \sqrt{2} \] or \[(\sqrt{2})^2 =2 \]
anonymous
  • anonymous
why wouldn't that be \[\sqrt{4}\]
Diyadiya
  • Diyadiya
Yes it is \(\sqrt{4}\) which is equal to 2 \[\sqrt{4}=2\]
Diyadiya
  • Diyadiya
\[\sqrt{4}= \pm{2} \]
anonymous
  • anonymous
okay thanks
Diyadiya
  • Diyadiya
you're welcome :)

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