Bhaskara II, also known as Bhaskaracharya, was an Indian mathematician and astronomer who lived in the 12th century CE. He is best known for his treatise on algebra, the Bijaganita.

The Bijaganita was originally written in Sanskrit, the classical language of ancient India.

The term 'Bijaganita' literally means 'seed computation' in Sanskrit. It refers to the fundamental operations of algebra, such as addition, subtraction, multiplication, and division.

Bhaskara II was one of the first mathematicians to introduce the concept of negative numbers in the Bijaganita.

Bhaskara II used the method of completing the square to solve quadratic equations. This method involves adding and subtracting a constant term to both sides of the equation to transform it into a perfect square.

Bhaskara II used the concept of continued fractions to solve indeterminate equations. Continued fractions are a way of expressing a rational number as an infinite series of fractions.

Bhaskara II developed a model for planetary motion that was based on the idea that the planets move in elliptical orbits around the Sun.

Bhaskara II used the concept of pi (π) to calculate the circumference of the Earth.

Bhaskara II used his observations of the Moon's motion to predict solar eclipses.

Bhaskara II used spherical trigonometry to discover the precession of the equinoxes.

Bhaskara II's most significant contribution to mathematics was introducing the concept of negative numbers.

Bhaskara II used the rule of three to solve cubic equations.

Bhaskara II used trigonometry to solve quartic equations.

Bhaskara II used conic sections to solve quintic equations.

Bhaskara II used the golden ratio to solve sextic equations.