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Mathematics 15 Online
OpenStudy (anonymous):

f(x) = x2 − 9

OpenStudy (anonymous):

wat u need to find out?

OpenStudy (anonymous):

f(x) = x2 − 9

OpenStudy (anonymous):

Is that x2 or is it \[x ^{2}\]

OpenStudy (anonymous):

ur quess is incomplete

OpenStudy (anonymous):

\[x{2}\]

OpenStudy (anonymous):

do you need to factorize it or something?

OpenStudy (anonymous):

all it says is : find the zeros of f

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

So, when does \[x^2-9=0\] for which x values is the above equation true?

OpenStudy (anonymous):

all I come up with is x=9

OpenStudy (anonymous):

I mean 3

OpenStudy (anonymous):

x=3 and -3??

OpenStudy (anonymous):

correct

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