Réponses

2013-02-01T12:42:05+01:00

Développements:

G = (4m+6)² = 16 m² +48m +36

H = (6x -4)² = 36x² -48 x +16

J= (8 - 2x)² = 64 + 4 x² -32 x

K= (5 +2r)² = 25 +20r  + 4r²