What are two reasons why al-khwarizmi books were important to the field of mathematics?

Al-Khwarizmi's books were crucial to mathematics for two main reasons. First, his work introduced the systematic solving of linear and quadratic equations, laying the groundwork for algebra as a distinct mathematical discipline. Second, his text "Al-Kitab al-Mukhtasar fi Hisab al-Jabr wal-Muqabala" not only provided methods for calculation but also popularized the term "algebra," influencing mathematical terminology and practices in both the Islamic world and later in Europe.