Решение систем уравнений второй степени
Y - x = - 2 y = x - 2 ( x + 3 )( y + 1 ) = 5 ( x + 3 )( x - 2 + 1 ) = 5 ( x + 3 )( x - 1 ) = 5 X^2 - x + 3х - 3 - 5 = 0 X^2 + 2x - 8 = 0 D = 4 + 32 = 36 = 6^2 X1 = ( - 2 + 6 ) : 2 = 2 X2 = ( - 2 - 6 ) : 2 = - 4 y1 = 2 - 2 = 0 y2 = - 4 - 2 = - 6