Alugen7 tululin n tulut tettɛawan i tenflit d umsker mi ara ad ten-sexdem deg unamek nniḍen a2 − b2 = (a − b)(a + b)neqqer-as amgired ger sin n umziren a2 + 2ab + b2 = (a + b)2 neqqer-as umzir-sin anbelal a2 − 2ab + b2 = (a − b)2 neqqer-as umzir-sin aneblal 11. Iluɣma n tegda n tefsan tis sant