Question

решите систему уравнений методом сложения

Answer 1

$left { {4 x^{2}- xy= 26 } atop {3 x^{2} + xy = 2}} right.$
$7 x^{2} = 28$
$x^{2} = 4$
x₁ = 2        x₂ = - 2
$3*4 + 2y = 2$                           $3*4 - 2y = 2$
$2y = - 10$                                   $2y = 10$
y₁ = - 5                                          y₂ = 5
Ответ: (2 ; - 5),  (- 2 ; 5)