Question 177309
{{{f(2)=2t^2-4t-1}}} Start with the given function.



{{{f(2)=2(2)^2-4(2)-1}}} Plug in {{{t=2}}}.



{{{f(2)=2(4)-4(2)-1}}} Square {{{2}}} to get {{{4}}}.



{{{f(2)=8-4(2)-1}}} Multiply {{{2}}} and {{{4}}} to get {{{8}}}.



{{{f(2)=8-8-1}}} Multiply {{{-4}}} and {{{2}}} to get {{{-8}}}.



{{{f(2)=-1}}} Combine like terms.



So the answer is {{{f(2)=-1}}}