anonymous
  • anonymous
can someone help me with this please(: In the equation │x│ = -a where a is a positive integer, what can be said about the solution? How can you modify the value of a so that you would have a solution to │x│ = -a of ±a?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Ive done the first part but need help with the modify part.
anonymous
  • anonymous
impossible as \[\left| x \right|= a ~ positive~ quantity\]
anonymous
  • anonymous
that is what the first part is asking, ive got that. but now its asking o modify, which i dont know.

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anonymous
  • anonymous
this is what others have put │x│ = - (-a) X = - (-a) or x = + (-a) X = a or x = - a
anonymous
  • anonymous
it can have solution only if \[\left| x \right|=a,if~a~ is~ positive \] \[\left| x \right|=-a ,if~a~is~negative.\]
anonymous
  • anonymous
so what others have put is incorrect?
anonymous
  • anonymous
they have not made distinction between positive and negative quantity.
anonymous
  • anonymous
okay,thanks.

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