Réponses

2014-09-29T18:51:39+02:00
A^2 = (p2+2p+1)/4
B^2 = (p2-2p+1)/4
A^2 - B^2 = (p2+2p+1)/4 - (p2-2p+1)/4
A^2 - B^2 = p2/4 + 2p/4 + 1/4 - p2/4 + 2p/4 - 1/4
A^2 - B^2 = 4p/4
A^2 - B^2 = p
(c.q.f.d.)