Question

Simplify

3x² + 2(x + 2) −3x(2x + 1)

Answer 1

$$\begin{gathered} 3{\mathrm{x}}^2+2(\mathrm{x}+2)-3\mathrm{x}(2\mathrm{x}+1) \\ =3{\mathrm{x}}^2+2\times \mathrm{x}+2\times 2-3\mathrm{x}\times 2\mathrm{x}-3\mathrm{x} \\ =3{\mathrm{x}}^2+2\mathrm{x}+4-6{\mathrm{x}}^2-3\mathrm{x} \\ =-3{\mathrm{x}}^2-\mathrm{x}+4 \end{gathered}$$