Urgent sur 15 poiints !!!!!
developper: A(x)= (-2x+1)X(3x-4)
developper: B(x)= (2x-5) au carré
developper: C(x)= (-3x+7) au carré
factoriser: D(x)= (x-2)au carré +3(x-2)
factoriser: E(x)= (x-1)X(-2x+4)+(x-1)X(x-5)

1

Réponses

2014-05-09T16:08:53+02:00
Developper:
A(x)= (-2x+1)X(3x-4)
a = -6x² +8x +3x -4
a = -6x² +11x-4

developper: B(x)= (2x-5) ²
b =4x² -20x +25

developper: C(x)= (-3x+7) ²
c = 9x² -42x +49

factoriser:  D(x)= (x-2)au carré +3(x-2)
d =(x-2)² +3(x-2)
d = (x-2)(x-2) +3(x-2)
d =(x-2)(x-2+3)
d=(x-2) (x +1)

factoriser: E(x)= (x-1)X(-2x+4)+(x-1)X(x-5)
e =(x-1)(-2x+4+x-5)
e =(x-1)(-x -1)