anonymous
  • anonymous
x^2-81/-9-x ?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1332449504643:dw|
hoblos
  • hoblos
|dw:1332449556521:dw|
hoblos
  • hoblos
can you simplify it now??

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More answers

anonymous
  • anonymous
how did you do that?
hoblos
  • hoblos
x^2-81 = (x-9)(x+9) difference of two squares
anonymous
  • anonymous
answer = x-9
anonymous
  • anonymous
I meant -(x+9) :)
hoblos
  • hoblos
no the answer is -(x-9) = -x+9
anonymous
  • anonymous
Im confused? How.
hoblos
  • hoblos
the two (x+9) are cancelled so the remaining is (x-9)/(-1) = -(x-9)
anonymous
  • anonymous
oh! so the - from denominator stayed with top?
hoblos
  • hoblos
yes in general a/(-b) = -a/b
phi
  • phi
remember \[ \frac{10}{-1} = \frac{-10}{1}= -10 \] you can move the minus sign up top
anonymous
  • anonymous
ok thank you :)
hoblos
  • hoblos
yw :)

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