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On veut developper , reduire et ordonner : f (x) et g (x)
f (x) = (x + 1)" au carre 
g (x) = -(x + 2)" au carre + 1

Sagot :

DROOPETTE
f (x) = (x + 1)²
=x²+2x+1

g (x) = -(x + 2)² + 1
= -(x²+4x+4)+1
= -x²-4x-4+1
= -x²-4x-3
FABRICE
[tex](x+1)^2 = x^2 + 2x + 1\\-(x+2)^2 + 1 = -x^2 - 4x - 4 + 1 = -x^2 - 4x - 3[/tex]

En espérant t'avoir aidé.

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