Aşağıda verilen denklem sisteminin çözüm kümesi nedir?
$x^2 - y = 3$
$2x^2 + y^2 = 18$
A) $\{(- \sqrt{3}, 0), (\sqrt{3}, 0)\}$
B) $\{(-3, 6), (3, 6)\}$
C) $\{(-2, 1), (2, 1)\}$
D) $\{(-3, 6), (3, 6), (-2, 1), (2, 1)\}$
E) $\{(- \sqrt{3}, 0), (\sqrt{3}, 0), (-2, 1), (2, 1)\}$
