April 2019 1 55 Report
exercice 1 : completer les egalités suivantes
a) (11-......)°=121-......+4/49 y °
b) ( 1/3 t +.....) (1/3 t - .....) = ....... - 81/25
c) (......+7) ° = 56z +........

exercice 2 : factoriser les expression suivantes
a) 3x°+9x4 b) 3(x+1)-(2x+7)(x+1)
c) x°+6x+9 d) 25x° - 10x+1
e) 49a° - 1 f) (5x - 2 )° - 16x°
g) (1-4x)° - (x-2x)° h) (x+1)(3-x) - (x+1)

°= au carré
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