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Sagot :

EVILCRXZY

Bonsoir !

A= x × x + 4 × x

A= x² +4x

B= 7y x 2 - 7y x 9y

B= 14y - 63y²

C= -2x × 5 - (-2x) × x

C= (-10x) - (-2x²)

D= 4x × 9 - 4x × 3x

D= 36x - 12x²

E= (-8x) × 9 - (-8x)× 7x²

E= (-72x) - (-56x³)

En espérant t'avoir aidé !

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