Réponses

2014-01-19T20:50:03+01:00
On peut diviser pr pi
(×-5)^2=(50-×)^2 => (×-5)^2-(50-×)^2=0 => (×-5-50+×)(×-5+50-×)=0 => ,(2×-55).45 =0
2×-55=0 => ×= 55/2