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Effectuer les produits suivants:
AX • A = (-1) x (+4) × (-2) x (-2,5) × (-8)
•B = (-7) x (+5) x (-3) x (-10) x (-0,01) × (-2
• C =-5 x (-2) x (+25) × 4 x (-0.1)
•D= (-3) x 5 x (+0,2) x (+7) x (-10) x (-2)

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