Al-Khwarizmi goes further in providing a full solution to the general quadratic equation, accepting one or two numerical answers for every quadratic equation, while providing geometric proofs in the process.
Al-Kwārizmī ika ogaran igig dǎɣ agay ən aliɣi imdan ən alɣisab quadratique atiwasanan, erɗan iyan meɣ əsin əsiknitan ən numérique fal hak alɣisab quadratique, dak dǎɣ agay ən sidutitan ən géométriquetan dǎɣ tabarat.