Question 112081


{{{f(x)=2x^2+7x+3}}} Start with the given function.



{{{f(2)=2(2)^2+7(2)+3}}} Plug in {{{x=2}}}. In other words, replace each x with 2.



{{{f(2)=2(4)+7(2)+3}}} Evaluate {{{(2)^2}}} to get 4.



{{{f(2)=+8+7(2)+3}}} Multiply 2 and 4 to get  8



{{{f(2)=+8+14+3}}} Multiply 7 and 2 to get  14



{{{f(2)=25}}} Now combine like terms



-----------Now let's evaluate another value---------



{{{f(x)=2x^2+7x+3}}} Start with the given function.



{{{f(-3)=2(-3)^2+7(-3)+3}}} Plug in {{{x=-3}}}. In other words, replace each x with -3.



{{{f(-3)=2(9)+7(-3)+3}}} Evaluate {{{(-3)^2}}} to get 9.



{{{f(-3)=+18+7(-3)+3}}} Multiply 2 and 9 to get  18



{{{f(-3)=+18+-21+3}}} Multiply 7 and -3 to get  -21



{{{f(-3)=0}}} Now combine like terms