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if f(x)=x^2-2x+4, find f(-3x)

Mathematics
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  • hba
Just plug in -3x in place of x :)
  • hba
@AutumnMaybury Start working :)
answer is one?

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Other answers:

  • hba
i got one for the answer
  • hba
Please show me your working @AutumnMaybury
f(x)=-3^2-2(-3)+4
  • hba
Its not -3,It's -3x
  • hba
See the question you provided us
but you said put -3 in for x..... *confused*
  • hba
I said put '-3x' in place of x
ok sorry rewriting now
  • hba
Ok :)
3x+4
  • hba
@AutumnMaybury I want you to show me your working please :)
|dw:1357830860437:dw|
  • hba
Well lemme show you something \[\huge\ (-3x)^2=(-3)^2(x)^2=9x^2\]
is that the answer?? please explain *confused* :(
  • hba
It would be x^2 not x
  • hba
I mean to say the first one my bad.
  • hba
f(x)=9x^2-6x+4
but 9x-6x does equal 3x-4
  • hba
It would be 9x^2 not 9x.
is the 9 the only one squareD? the 6x isnt?
  • hba
No.
  • hba
The 6x is not.
  • hba
I have showed you above in latex.
ok thank you
  • hba
|dw:1357831302413:dw|
closing out of this question anddddd askingg a neww onee
  • hba
Okay :)

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