Question

система уравнении x^3-y^3=7;x-y=1

Answer 1

$left { {{x^3-y^3=7} atop {x-y=1}} right. ; left { {{(x-y)(x^2+xy+y^2)=7} atop {x-y=1}} right. ; left { {{x^2+xy+y^2=7} atop {x-y=1}} right. ; left { {{(x-y)^2+3xy=7} atop {x-y=1}} right. \\ left { {{3xy=6} atop {x-y=1}} right. ; left { {{xy=2} atop {y=x-1}} right. ; left { {{x(x-1)=2} atop {y=x-1}} right. ; left { {{x^2-x-2=0} atop {y=x-1}} right. ; left { {{x_1=-1,; x_2=2} atop {y_1=-2,; y_2=1}} right. \\Otvet:; (-1,-2),; (2,1).$