angelicaaxaa
angelicaaxaa
22-06-2018
Mathematics
contestada
If f (x) =3x^2-x, find f (-2)
Respuesta :
cynthiatershner
cynthiatershner
22-06-2018
f (-2) = 3*(-2)^2
3*4= 12
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twvogels
twvogels
22-06-2018
The formatting of this question is unclear. Is the original question supposed to read [tex]f(x)=3x^{2}-x[/tex] or [tex]f(x)=(3x)^{2}-x[/tex] assuming the former:
[tex]f(x)=3x^{2}-x[/tex]
[tex]f(-2)=3((-2)^{2})-(-2)[/tex]
[tex]f(-2)=3(4)+2[/tex]
[tex]f(-2)=12+2[/tex]
[tex]f(-2)=14[/tex]
Answer Link
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