![f(3) = 2(3)^2 + 3\\\\\Rightarrow\ f(3)=2(9)+3..............[\text{Since}\ 3^2=9]\\\\\Rightarrow\ f(x)=18+3..............[\text{Since}\ 2\times9=18]\\\\\Rightarrow\ f(x)=21..........[\text{Addition property}]](/tpl/images/0269/6217/c4a81.png)
If f(x) = 2x 2 + 3, find f(3).
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Answers: 2
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