anonymous
  • anonymous
Solve 4x^2=28 by finding square roots. Please show me how to solve this by including the steps.
Mathematics
chestercat
  • chestercat
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zzr0ck3r
  • zzr0ck3r
first divide both sides by 4, and tell me what you have.
anonymous
  • anonymous
x^2=7
zzr0ck3r
  • zzr0ck3r
ok now take the square root of both sides and tell me what you have

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anonymous
  • anonymous
x= 2.64
anonymous
  • anonymous
?
zzr0ck3r
  • zzr0ck3r
well, you should have gotten \(x=\pm \sqrt{7}\) So \(x=\sqrt{7}\) or \(-\sqrt{7}\)
anonymous
  • anonymous
Thanks :)

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