aliekat
aliekat
06-12-2016
Mathematics
contestada
math. please help. picture is attached
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nobrains
nobrains
06-12-2016
[tex]f(x)=x^3+2x^2-x-1[/tex]
To find f(3), simply substitute 3 in as x.
[tex]f(3)=(3)^3+2(3)^2-(3)-1 \\ f(3)=27+18-4 \\ f(3)=41[/tex]
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the value of y is directly proportional to the value of x .If y = 124 when x = 8 , what is the value of y when x= - 1/2
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