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Sagot :

GIU40
A = 2x + 6x - 5x
= 8x - 5x
= 3x

B = 5x2 + 3x2
= 8x2 ( au carré )

C = a2 - 5a2 + 2a2
= -4a2 + 2a2
= -2a2 ( au carré )

D = 3/5x + 1/5x
= 4/5x

E = 1/3y2 + 5/6y2
= 2/6y2 + 5/6y2
= 7/6y2 (au carré )

Bonne fin de journée

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