Question

Помогите пожалуйста с 21 номером очень надо(

Answer 1

$left { {{2x^2+3y^2=11, |cdot 2} atop {4x^2+6y^2=11x}} right. ; left { {{4x^2+6y^2=22} atop {4x^2+6y^2=11x}} right. ; ominus left { {4x^2+6y^2=22{y=2} atop {0=22-11x}} right. ; left { {{2x^2+3y^2=11} atop {x=2}} right. \\ left { {{2cdot 4+3y^2=11} atop {x=2}} right. ; left { {{3y^2=3} atop {x=2}} right. ; left { {{y=pm 1} atop {x=2}} right. \\Otvet:; ; (2,-1); ,; ; (2,1); .$