Question

Find f(4) when f(x)= x^2 + 5x +2

Answer 1

In order to find f evaluated at 4, we need to replace the number 4 into the place of x, that is,

$f(4)=(4)^2+5(4)+2$

which gives

$f(4)=16+20+2$

Therefore, the answer is:

$f(4)=38$