Question 639287


{{{f(x)=x^4-x^2-9x-16}}}.....if {{{x=4}}}, we will have:

{{{f(4)=4^4-4^2-9*4-16}}}

{{{f(4)=256-16-36-16}}}

{{{f(4)=256-68}}}

{{{f(4)=188}}}