Question

Решите систему уравнений.

Answer 1

y - 5x = - 8
y - x^2 = - 2
Решение
y = 5x - 8
y = x^2 - 2
5x - 8 = x^2 - 2
X^2 - 5x + 6 = 0
D = 25 - 24 = 1 = 1^2
X1 = ( 5 + 1 ) : 2 = 3
X2 = ( 5 - 1 ) : 2 = 2
y = 5x - 8
y1 = 5•3 - 8 = 7
y2 = 5•2 - 8 = 2
Ответ ( 3 ; 7 ) ; ( 2 ; 2 )