Bonjour,
m × n = (-n) × (-m) =−108
Donc (−n)×5×(−m)×(−5) = (-n) × (-m) × 5 × (-5) = (-108) × (-25) = 2700
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Bonjour,
m × n = (-n) × (-m) =−108
Donc (−n)×5×(−m)×(−5) = (-n) × (-m) × 5 × (-5) = (-108) × (-25) = 2700