Question

Помогите пожалуйста решить пример! Даю 65 баллов

Answer 1

Ответ:

$\left \{ {{(15-x)^2 - (5+x)^2 = -4y} \atop {4x-3y+6 = 0}} \right. \\\left \{ {{(15-x-5-x) (15-x+5+x) = -4y} \atop {4x-3y+6 = 0}} \right. \\\left \{ {{(10-2x) *20 = -4y} \atop {4x-3y+6 = 0}} \right. \\\left \{ {{(10-2x) *5 = -y} \atop {4x-3y+6 = 0}} \right. \\\left \{ {{50-10x = -y} \atop {4x-3y+6 = 0}} \right. \\\left \{ {{10x-50 = y} \atop {4x-3y+6 = 0}} \right. \\4x-30x+150+6 = 0\\-26x+156 = 0\\26x = 156\\x = 6\\y = 10*6-50 = 10$

ответ (6; 10)