y^2 − 4y + 10x + 14 = 0;
y^2 - 2 * y * 2 + 4 + 10x - 4 + 14 = 0;
(y^2 - 4y + 4) + 10x + 10 = 0;
(y - 2)^2 + 10x + 10 = 0;
10x = -10 - (y - 2)^2;
x = -1 - (y - 2)^2/10.
y^2 − 4y + 10x + 14 = 0;
y^2 - 2 * y * 2 + 4 + 10x - 4 + 14 = 0;
(y^2 - 4y + 4) + 10x + 10 = 0;
(y - 2)^2 + 10x + 10 = 0;
10x = -10 - (y - 2)^2;
x = -1 - (y - 2)^2/10.