Question Number 18761 by 786786AM last updated on 29/Jul/17
$$\mathrm{If}\:\:{x}\:\in\:{R},\:\:\:\mathrm{then}\:\mathrm{the}\:\mathrm{expression}\:\mathrm{9}^{{x}} −\mathrm{3}^{{x}} +\mathrm{1} \\ $$$$\mathrm{assumes}\: \\ $$
Commented by Tinkutara last updated on 29/Jul/17
$$\mathrm{What}\:\mathrm{are}\:\mathrm{the}\:\mathrm{options}? \\ $$