Question 150532
# 1


{{{f(x)=3x^2+5x-2}}} Start with the given equation.



{{{f(-2)=3(-2)^2+5(-2)-2}}} Plug in {{{x=-2}}}.



{{{f(-2)=3(4)+5(-2)-2}}} Square {{{-2}}} to get {{{4}}}.



{{{f(-2)=12+5(-2)-2}}} Multiply {{{3}}} and {{{4}}} to get {{{12}}}.



{{{f(-2)=12-10-2}}} Multiply {{{5}}} and {{{-2}}} to get {{{-10}}}.



{{{f(-2)=0}}} Combine like terms.



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# 2


{{{f(x)=3x^2+5x-2}}} Start with the given equation.



{{{f(4)=3(4)^2+5(4)-2}}} Plug in {{{x=4}}}.



{{{f(4)=3(16)+5(4)-2}}} Square {{{4}}} to get {{{16}}}.



{{{f(4)=48+5(4)-2}}} Multiply {{{3}}} and {{{16}}} to get {{{48}}}.



{{{f(4)=48+20-2}}} Multiply {{{5}}} and {{{4}}} to get {{{20}}}.



{{{f(4)=66}}} Combine like terms.