Question Number 75218 by 21042004 last updated on 08/Dec/19
$$\mathrm{Simplify}:\:\left({x}^{\mathrm{4}} −\mathrm{3}{x}^{\mathrm{3}} +\mathrm{4}{x}^{\mathrm{2}} −\mathrm{12}{x}\right)\::\:\left({x}^{\mathrm{2}} +\mathrm{4}\right) \\ $$
Commented by JDamian last updated on 08/Dec/19
$${That}\:{is}\:{not}\:{a}\:{equation} \\ $$
Answered by mind is power last updated on 08/Dec/19
$$\mathrm{x}^{\mathrm{4}} −\mathrm{3x}^{\mathrm{3}} +\mathrm{4x}^{\mathrm{2}} −\mathrm{12x}=\mathrm{x}\left(\mathrm{x}^{\mathrm{3}} −\mathrm{3x}^{\mathrm{2}} +\mathrm{4x}−\mathrm{12}\right) \\ $$$$\left(\mathrm{x}−\mathrm{3}\right)\left(\mathrm{x}^{\mathrm{2}} +\mathrm{4}\right)=\mathrm{x}^{\mathrm{3}} −\mathrm{3x}^{\mathrm{2}} +\mathrm{4x}−\mathrm{12}\:\mathrm{deduce} \\ $$