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 tarehe 30 Juni, 2012, Kituo cha Sayansi katika mji wa Kabul, kilitangaza kuwa Khalilullah Yaqubi, mwanafunzi wa shule ya sekondari kutoka katika Jimbo la Ghazni, kwa juhudi zake mwenyewe aligundua kanuni ya kimahesabu inayoweza kutumika katika kukokotoa milinganyo ya kwadratiki ya mtajo mmoja ya ukomo wa kipeo cha pili.