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Sagot :

Réponse :

A ABCD = AB*BC

AB = x+x+1= 2x+1

BC = x

A = x(2x+1)= 2x²+x

A AEFG = AE*AG

AE =x

AG = x-3

A = x(x-3)= x²-3x

A colorée =A ABCD - A AEFG

(2x²+x)-(x²-3x)= tu calcules

Explications étape par étape

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