Incorrect. Rewrite the equation in standard form first. If the polynomial can be factored, its factored form will be $\displaystyle{\left({4}{x}+{r}\right)}{\left({x}+{s}\right)}\usepackage{cmbright}\Huge\$ where $\displaystyle{r}{s}={3}\usepackage{cmbright}\Huge\$ and $\displaystyle{r}+{4}{s}=-{7}\usepackage{cmbright}\Huge\$ or $\displaystyle{\left({2}{x}+{r}\right)}{\left({2}{x}+{s}\right)}\usepackage{cmbright}\Huge\$ where $\displaystyle{r}{s}={3}\usepackage{cmbright}\Huge\$ and $\displaystyle{2}{r}+{2}{s}=-{7}\usepackage{cmbright}\Huge\$ . Factor the polynomial and use the zero product property to solve for x.