anonymous
  • anonymous
Solve for x (x-2)^-4=625
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Do you know of x^-2 = 1/(x^2)?
anonymous
  • anonymous
no I think the answer is x=7 is that correct
geerky42
  • geerky42
\((x-2)^4 =\dfrac{1}{625}\) \(\sqrt[4]{(x-2)^4} = \sqrt[4]{\dfrac{1}{625}}\) \(|x-2| = \dfrac{1}{\sqrt[4]{625}} = \dfrac{1}{5}\) \(|x-2| = \dfrac{1}{5}\)

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geerky42
  • geerky42
There are two answers.
geerky42
  • geerky42
x= 7 is not correct.
anonymous
  • anonymous
Ok I have math processong errors when you gave me thAt first reply and how do you get two solutions
geerky42
  • geerky42
Look at last step. There is absolute value.
geerky42
  • geerky42
Do you know how to get rid of absolute value?
anonymous
  • anonymous
I can't see your last step because it all says math processing error
geerky42
  • geerky42
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anonymous
  • anonymous
So then does x=.5 and x=-2 is that what you are meaning what the answers are
anonymous
  • anonymous
Is that what you are meaing
anonymous
  • anonymous
Can someone tell me if x=-2 and x=.2 are the answers to this problem

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