Question 1008844

{{{f(x)=x^2-x+7}}}, 
 

{{{f(4)=4^2-4+7=16-4+7=23-4=19}}}
{{{f(-6)=(-6)^2-(-6)+7=36+6+7=49}}}
{{{f(0)=0^2-0+7=7}}}