Question 152344
I'll do the first two to get you going in the right direction


a)


{{{f(x)=x^2-x+1}}} Start with the given function.



{{{f(2)=(2)^2-2+1}}} Plug in {{{x=2}}}.



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



{{{f(2)=3}}} Combine like terms.



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b)


{{{f(x)=x^2-x+1}}} Start with the given equation.



{{{f(1/2)=(1/2)^2-1/2+1}}} Plug in {{{x=1/2}}}.



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



{{{f(1/2)=1/4-2/4+1}}} Multiply {{{1/2}}} by {{{2/2}}}



{{{f(1/2)=1/4-2/4+4/4}}} Multiply {{{1}}} by {{{4/4}}}



{{{f(1/2)=(1-2+4)/4}}} Combine the fractions



{{{f(1/2)=3/4}}} Combine like terms.