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Sagot :

LANAO

A= 2x-1-x²

B= x²+x+7

C= 3+7x²-2x

D= 1-9x+x²

Bonjour,

Ecrire sans parenthèses les expressions:

A= 2x-1-x²

B= x²+x+7

C= 3+7x²-2x

D= 1-9x+x²

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