1.
3*x+1/x-2 = 2*x-10/x+1
x ∈ ∅;
x ∈ ∅; x = -(sqrt(5)*sqrt(7)*%i-3)/2;x = (sqrt(5)*sqrt(7)*%i+3)/2;
x=(217*корень(3)+440.448634916718)^(1/3)/3^(7/6)-26/(3^(5/6)*(217*корень(3)+440.448634916718)^(1/3))+1/3;
x=(217*sqrt(3)+440.448634916718)^(1/3)/3^(7/6)-26/(3^(5/6)*(217*sqrt(3)+440.448634916718)^(1/3))+1/3; x = -((9*sqrt(5)*sqrt(479)+217*sqrt(3))^(2/3)*(sqrt(3)*%i+1)+26*3^(5/6)*%i-2*3^(1/6)*(9*sqrt(5)*sqrt(479)+217*sqrt(3))^(1/3)-26*3^(1/3))/(2*3^(7/6)*(9*sqrt(5)*sqrt(479)+217*sqrt(3))^(1/3));x = ((9*sqrt(5)*sqrt(479)+217*sqrt(3))^(2/3)*(sqrt(3)*%i-1)+26*3^(5/6)*%i+2*3^(1/6)*(9*sqrt(5)*sqrt(479)+217*sqrt(3))^(1/3)+26*3^(1/3))/(2*3^(7/6)*(9*sqrt(5)*sqrt(479)+217*sqrt(3))^(1/3));
2.
x+2/x-1+x/x+1 = 6/x^2-1
x=(9*корень(307)+91*корень(3))^(1/3)/3^(7/6)-2/(3^(5/6)*(9*корень(307)+91*корень(3))^(1/3))-2/3;
x=(9*sqrt(307)+91*sqrt(3))^(1/3)/3^(7/6)-2/(3^(5/6)*(9*sqrt(307)+91*sqrt(3))^(1/3))-2/3; x = -((9*sqrt(307)+91*sqrt(3))^(2/3)*(sqrt(3)*%i+1)+2*3^(5/6)*%i+4*3^(1/6)*(9*sqrt(307)+91*sqrt(3))^(1/3)-2*3^(1/3))/(2*3^(7/6)*(9*sqrt(307)+91*sqrt(3))^(1/3));x = ((9*sqrt(307)+91*sqrt(3))^(2/3)*(sqrt(3)*%i-1)+2*3^(5/6)*%i-4*3^(1/6)*(9*sqrt(307)+91*sqrt(3))^(1/3)+2*3^(1/3))/(2*3^(7/6)*(9*sqrt(307)+91*sqrt(3))^(1/3));
9x+1=9+1=10
думаю так правильно