Решите систему уравнений:
1.
{x^2-3xy+2y^2=0
{x^2+x+y=-5/9
2.
{4x^2-7xy+y^2=3
{xy+4x-2y=8
3.
{x^2+2xy-3y^2=0
{y^2+x+y=5/4
1.
{x^2-3xy+2y^2=0
{x^2+x+y=-5/9
2.
{4x^2-7xy+y^2=3
{xy+4x-2y=8
3.
{x^2+2xy-3y^2=0
{y^2+x+y=5/4
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