Answer
$(x+4)(x+1)$
Work Step by Step
RECALL:
A trinomial of the form $x^2+bx+c$ can be factored if there are integers $d$ and $e$ such that $c=de$ and $b=d+e$.
The trinomial's factored form will be:
$x^2+bx+c=(x+d)(x+e)$
The given trinomial has $b=5$ and $c=4$.
Note that $4=4(1)$ and $5= 4+1$.
This means that $d=4$ and $e=1$
Thus, the factored form of the trinomial is:
$(x+4)(x+1)$
