Question 87889
#1

{{{f(x)=4x^2-3x+2}}} Start with the given polynomial



{{{f(-30)=4(-30)^2-3(-30)+2}}} Plug in {{{x=-30}}}



{{{f(-30)=4(900)-3(-30)+2}}} Raise -30 to the second power to get 900



{{{f(-30)=3600-3(-30)+2}}} Multiply 4 by 900 to get 3600



{{{f(-30)=3600--90+2}}} Multiply 3 by -30 to get -90



{{{f(-30)=3692}}} Now combine like terms

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#2

{{{f(x)=4x^2-3x+2}}} Start with the given polynomial



{{{f(30)=4(30)^2-3(30)+2}}} Plug in {{{x=30}}}



{{{f(30)=4(900)-3(30)+2}}} Raise 30 to the second power to get 900



{{{f(30)=3600-3(30)+2}}} Multiply 4 by 900 to get 3600



{{{f(30)=3600-90+2}}} Multiply 3 by 30 to get 90



{{{f(30)=3512}}} Now combine like terms