1) k^2 - 11 = -2;
k^2 = 11 - 2;
k^2 = 9;
k1 = 3; k2 = -3;
2) 17 - x^2 = 18;
x^2 = 17 - 18;
x^2 = -1;
нет корней.
1) k^2 - 11 = -2;
k^2 = 11 - 2;
k^2 = 9;
k1 = 3; k2 = -3;
2) 17 - x^2 = 18;
x^2 = 17 - 18;
x^2 = -1;
нет корней.