Decades: 1560s BC 1550s BC 1540s BC 1530s BC 1520s BC - 1510s BC - 1500s BC 1490s BC 1480s BC 1470s BC 1460s BC
Significant People
... the square[?]. <math>ax^2+bx+c=0</math> Dividing our quadratic equation by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + ...