Question

решите систему уравнений {y=x^2+2x+7 {y=x+7

Answer 1

X^2 + 2x + 7 = x + 7
X^2 + x = 0
X( x + 1 ) = 0
X1 = 0
X2 = - 1
y1 = 0 + 7 = 7
y2 = - 1 + 7 = 6
Ответ ( 0 ; 7 ) ; ( - 1 ; 6 )