Réponses

Meilleure réponse !
2014-01-10T18:19:36+01:00
(3+2)²
=9+2*2*3+4
=9+12+4
=25

(5-7)²
=25-2*5*7+49
=25-70+49
=4

3²-(-3)²
=9-9
=0

11²-(10+1)²
=121-(100+2*10*1+1)
=121-(121)
=0

(2/3+1/3)²
=(3/3)²
=1²
=1

-6²-5²
=-(36)-(25)
=-36-25
=-61