[tex]\bf x^3+x^2+\cfrac{x}{4}\iff x^3+x^2+\cfrac{1}{4}x\implies x\left( x^2+x+\frac{1}{4} \right) \\\\
-----------------------------\\\\
\cfrac{1}{2}\cdot \cfrac{1}{2}\implies \cfrac{1}{4}\qquad \qquad \cfrac{1}{2}+\cfrac{1}{2}\implies 1\\\\
-----------------------------\\\\
x\left( x+\frac{1}{2} \right)\left( x+\frac{1}{2} \right)[/tex]
