Question

помогите пожалуйстааа сос

Answer 1

$\displaystyle\bf\\\left \{ {{ {x}^{2} - {y}^{2} = 3} \atop {x - y = 3 }} \right. \\ \displaystyle\bf\\\left \{ {{(3 + y) {}^{2} - {y}^{2} = 3 } \atop {x = 3 + y }} \right. \\ \\ 9 + 6y + {y}^{2} - {y}^{2} = 3 \\ 6y = 3 - 9 \\ 6y = - 6 \\ y = - 6 \div 6 \\ y = - 1 \\ \\ x = 3 - 1 = 2$

Ответ: ( 2 ; - 1 )