Factor the polynomial $\displaystyle {x}^{{2}}+{1}{x}-{12}$. Your answer can be written as $\displaystyle {\left({x}+{A}\right)}{\left({x}+{B}\right)}$ where $\displaystyle {A}\lt{B}$
and $\displaystyle {A}$ equals:


and $\displaystyle {B}$ equals: