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PhiBeeandJay
Group Title
Please help!
Find f(x)f(x) for the following function:
f(x)=x^3+x9
 2 years ago
 2 years ago
PhiBeeandJay Group Title
Please help! Find f(x)f(x) for the following function: f(x)=x^3+x9
 2 years ago
 2 years ago

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Mertsj Group TitleBest ResponseYou've already chosen the best response.0
What is f(x)?
 2 years ago

PhiBeeandJay Group TitleBest ResponseYou've already chosen the best response.0
The question didn't say and so I'm stuck.
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
\(f(3)=3^2+39=27+39=21\) \(f(3)=(3)^2+(3)9=2739=39\) \(3921=60\) now try it with just \(x\) and \(x\)
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
\(f(x)\) is confusing, but it means replace \(x\) everywhere by \(x\)
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
so first step is to write \(f(x)= (x)^3+(x)9\) and then simplify a big take that answer, and subtract \(x^3+x9\) from it make sure to use parentheses
 2 years ago

PhiBeeandJay Group TitleBest ResponseYou've already chosen the best response.0
So it would be xx9(x^2+x9)?
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
i assume you mean \[x^3x9(x^3+x9)\]
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
ok good, now remove the parentheses by distributing the minus sign, then combine like terms
 2 years ago

PhiBeeandJay Group TitleBest ResponseYou've already chosen the best response.0
Thank you!
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
yw hope it is clear
 2 years ago
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