Lived: 1623 - 1696 Ruled: 1629 - 1643
Her grandfather was Tokugawa Hidetada[?], the 2nd Shogun.
... have y = b/(2a), so we add the square of b/(2a) to both sides, getting <math>x^2+\frac{b}{a}x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}.</math> The ...