AutumnMaybury
if f(x)=x^22x+4, find f(3x)



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hba
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Just plug in 3x in place of x :)

hba
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@AutumnMaybury Start working :)

AutumnMaybury
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answer is one?

hba
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@AutumnMaybury What ?

AutumnMaybury
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i got one for the answer

hba
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Please show me your working @AutumnMaybury

AutumnMaybury
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f(x)=3^22(3)+4

hba
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Its not 3,It's 3x

hba
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See the question you provided us

AutumnMaybury
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but you said put 3 in for x..... *confused*

hba
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I said put '3x' in place of x

AutumnMaybury
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ok sorry rewriting now

hba
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Ok :)

AutumnMaybury
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3x+4

hba
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@AutumnMaybury
I want you to show me your working please :)

AutumnMaybury
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dw:1357830860437:dw

hba
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Well lemme show you something
\[\huge\ (3x)^2=(3)^2(x)^2=9x^2\]

AutumnMaybury
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is that the answer?? please explain *confused* :(

hba
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It would be x^2 not x

hba
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I mean to say the first one my bad.

hba
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f(x)=9x^26x+4

AutumnMaybury
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but 9x6x does equal 3x4

hba
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It would be 9x^2 not 9x.

AutumnMaybury
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is the 9 the only one squareD? the 6x isnt?

hba
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No.

hba
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The 6x is not.

hba
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I have showed you above in latex.

AutumnMaybury
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ok thank you

hba
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dw:1357831302413:dw

AutumnMaybury
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closing out of this question anddddd askingg a neww onee

hba
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Okay :)