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Mathematics, 10.11.2020 16:40 Melleeroo

Let the function \displaystyle ff be defined by \displaystyle f\left(x\right)=x^{2}+12f(x)=x 2 +12. If \displaystyle nn is a positive number such that \displaystyle f\left(3n\right)=3f\left(n\right)f( 3n)=3f(n), what is the value of \displaystyle nn?

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Let the function \displaystyle ff be defined by \displaystyle f\left(x\right)=x^{2}+12f(x)=x 2 +12....
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