What are Brahma Gupta achievements?

Brahmagupta was a prominent Indian mathematician and astronomer in the 7th century, best known for his work on algebra and number systems. He is credited with formulating rules for arithmetic operations involving zero and negative numbers, which were revolutionary for his time. His seminal text, the "Brahmasphutasiddhanta," introduced concepts such as the solutions to quadratic equations and methods for calculating areas and volumes. Additionally, he made significant contributions to astronomy, including calculations for eclipses and planetary positions.