Question

Find the value of $12x^3+x^3+x.$ If $x=3$

Answer 1

Solution:-

$f\left(x\right)=12x^3+x^3+x=?$

Given that:- $x=3$

$\therefore f(x=3)=12\times {\left(3\right)}^3+{\left(3\right)}^3+3$

$\Rightarrow =12\times 27+27+3$

$\Rightarrow =324+27+3$

$\Rightarrow =354$

Hence, the correct answer is 354.