Question 104353

{{{f(x)=-x^2+4x+10}}} Start with the given polynomial



{{{f(-2)=-(-2)^2+4(-2)+10}}} Plug in {{{x=-2}}}



{{{f(-2)=-4+4(-2)+10}}} Evaluate {{{(-2)^2}}} to get 4

 

{{{f(-2)=-4-8+10}}} Multiply 4 and  -2  to get -8

  

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



So when {{{x=-2}}}, {{{f(x)=-2}}}