Question Number 77014 by aliesam last updated on 02/Jan/20
Commented by mr W last updated on 02/Jan/20
$${look}\:{and}\:{think}: \\ $$$${x}={y}=\pm\mathrm{1} \\ $$
Commented by mr W last updated on 02/Jan/20
$${people}\:{who}\:{create}\:{such}\:{equations} \\ $$$${maybe}\:{think}\:{they}\:{are}\:{clever},\:{but} \\ $$$${in}\:{fact}\:{one}\:{can}\:{learn}\:{nothing}\: \\ $$$${through}\:{such}\:{questions}. \\ $$
Commented by necxxx last updated on 02/Jan/20
$${I}\:{believe}\:{you}\:{sir}.\:{Please}\:{tell}\:{them}\:{because} \\ $$$${I}\:{wonder}\:{the}\:{need}\:{for}\:{such}\:{problems}. \\ $$