Решите систему {2х-у=10;5х-6у^2=-4

Question

Решите систему {2х-у=10;5х-6у^2=-4

Answer 1

{2x-y=10⇒y=2x-10
{5x-6y²=-4
5x-6(2x-10)²+4=0
5x-24x²+240x-600+4=0
24x²-245x+596=0
D=60025-57216=2809
x1=(245-53)/48=4
x2=(245+53)/48=6 5/24