Из первого уравнения выразим у:
Подставим во второе уравнение:
x_1=-2" alt="1)x+2=0=>x_1=-2" align="absmiddle" class="latex-formula">
При y=2-x^2=>y_1=2-(-2)^2=2-4=-2" alt="x_1=-2=>y=2-x^2=>y_1=2-(-2)^2=2-4=-2" align="absmiddle" class="latex-formula">
x_2=1" alt="2)x-1=0=>x_2=1" align="absmiddle" class="latex-formula">
При y=2-x^2=>y_2=2-1^2=1" alt="x_2=1=>y=2-x^2=>y_2=2-1^2=1" align="absmiddle" class="latex-formula">
y_3=2-(\frac{1-\sqrt{5}}{2})^2=2-\frac{1-2\sqrt{5}+5}{4}=" alt="=>y_3=2-(\frac{1-\sqrt{5}}{2})^2=2-\frac{1-2\sqrt{5}+5}{4}=" align="absmiddle" class="latex-formula">
y_4=2-(\frac{1+\sqrt{5}}{2})^2=2-\frac{1+2\sqrt{5}+5}{4}=" alt="=>y_4=2-(\frac{1+\sqrt{5}}{2})^2=2-\frac{1+2\sqrt{5}+5}{4}=" align="absmiddle" class="latex-formula">
Ответ: {- 2; - 2}; {1; 1}; {}; {}