Find all zeros and fully factor the function f(x)=12x4+35x3−65x2−40x+48\displaystyle {f{{\left({x}\right)}}}={12}{x}^{{4}}+{35}{x}^{{3}}-{65}{x}^{{2}}-{40}{x}+{48}. Use integers and fractions for answers, not decimals.

The zeros are  

The fully factored form is f(x)=\displaystyle {f{{\left({x}\right)}}}=  

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