Question

Решите срочно плиз !!!!!

Answer 1

х - одно число

у - другое число

$\displaystyle\bf\\\left \{ {{x + y = - 18} \atop {xy = 65 }} \right. \\ \displaystyle\bf\\\left \{ {{y = - 18 - x} \atop {x( - 18 - x) = 65 }} \right. \\ \\ - 18x - {x}^{2} = 65 \\ {x}^{2} + 18x + 65 = 0 \\ po \: \: \: teoreme \: \: \: vieta {x}^{2} + bx + c = 0\\ x_{1} + x_{2} = - b\\ x_{1} x_{2} = c \\ x_{1}  +  x_{2} =  - 18 \\ x_{1} x_{2} =65  \\ x_{1} =  - 5\\ x_{2} = - 13 \\ \\ y_{1} = - 18 - ( - 5) = - 18 + 5 = - 13 \\ y_{2} = -1 8 - ( - 13) = - 18 + 13 = - 5$

Ответ: - 13 и - 5