We can use distribution property to multiply the polynomial by the monomial.
$$ \begin{aligned} \color{blue}{2} \cdot \left( -2x-6 \right) &= \color{blue}{2} \cdot \left( -2x\right) + \color{blue}{2} \cdot \left( -6\right) = \\ &= -4x-12 \end{aligned} $$