Решите систему уравнений
5x^2+y^2=36
10x^2+2y^2=36x

y²=36-5x²10x²+2y²=36x; 10x²+2×(36-5x²)=36x10x²+72-10x²=36x72=36x36x=72x=72÷36x=2y²=36-5×2²=36-20=16y=4ответ: x=2; y=4