On 30 June, 2012 the Center of Science in Kabul announced that Khalilullah Yaqubi, a high school student from Ghazni province, had independently discovered a mathematical formula that can be used to solve 'second-degree quadratic equations with one unknown'.
Mnamo Juni 30, 2012, Kituo cha Sayansi huko Kabul kilitangaza kwamba Khalilullah Jacobai, mwanafunzi wa shule ya sekondari kutoka jimbo la Ghazni, alikuwa amegundua kwa kujitegemea njia ya hesabu ambayo inaweza kutumiwa kutatua "mchanganyiko wa pili-degree quadratic kwa kutumia njia isiyofahamika'.