Spring98
  • Spring98
If x^2 = 20, what is the value of x?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
two possible values
steve816
  • steve816
|dw:1442280470808:dw|
steve816
  • steve816
|dw:1442280500222:dw|

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More answers

Spring98
  • Spring98
A. ±10 B. ±40
jim_thompson5910
  • jim_thompson5910
do you see how steve816 simplified the radical?
Spring98
  • Spring98
ya
Spring98
  • Spring98
±10 squared ±20squared
Spring98
  • Spring98
@satellite73
zzr0ck3r
  • zzr0ck3r
They told you the exact numbers.
Spring98
  • Spring98
those are the answer choices
Spring98
  • Spring98
what exact numbers?
zzr0ck3r
  • zzr0ck3r
\(x=\pm 2\sqrt{5}\)
zzr0ck3r
  • zzr0ck3r
That means \(x=2\sqrt{5}\) or \(x=-2\sqrt{5}\).
Spring98
  • Spring98
im so confused
Spring98
  • Spring98
is C the answer?
steve816
  • steve816
Can you list out all the answer choices?
Spring98
  • Spring98
i already did the first one says A and B and the one under it is C and D
jim_thompson5910
  • jim_thompson5910
post a screenshot of the answer choices if you can
Spring98
  • Spring98
the 6th and 7th post on this page!!!
Spring98
  • Spring98
is the answer choices
Spring98
  • Spring98
plz help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
jim_thompson5910
  • jim_thompson5910
are you able to post a screenshot?
Spring98
  • Spring98
i can't do that
jim_thompson5910
  • jim_thompson5910
so the problem is on a piece of paper?
Spring98
  • Spring98
±10squared ±20squared ±10 ±40
Spring98
  • Spring98
is it C?
jim_thompson5910
  • jim_thompson5910
so choice A is this? \[\Large \pm 10^2\]
Spring98
  • Spring98
i ment square root
jim_thompson5910
  • jim_thompson5910
oh so choice A is this? \[\Large \pm\sqrt{10}\]
Spring98
  • Spring98
yup and so is B but it's 20
jim_thompson5910
  • jim_thompson5910
Look at the first post steve816 wrote
jim_thompson5910
  • jim_thompson5910
steve816 practically gives the answer
Spring98
  • Spring98
oh so it is choice B right?
jim_thompson5910
  • jim_thompson5910
yeah \(\Large \pm \sqrt{20}\)
Spring98
  • Spring98
thanks!

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