You can
put this solution on YOUR website! f(x)=3x^2+2x+5, Evaluate f(3) and f(-5).
Just substitute 3 for x and simplify:
f(3)=3(3)^2+2(3)+5
f(3)=3(9)+6+5
f(3)=27+6+5
f(3)=38
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Just substitute -5 for x and simplify:
f(-5)=3(-5)^2+2(-5)+5
f(-5)=3(25)+(-10)+5
f(-5)=75-10+5
f(-5)=70
That's all there is to it!
Edwin
