Bonjour. Pourriez-vous me développer et réduire cette expression svp :
10(x-5 + y-5) + (5-(x-5))x(5-(y-5))
Merci
10(x-5 + y-5) + (5-(x-5))x(5-(y-5))
Merci
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Bonsoir,10(x - 5 + y - 5) + (5 - (x - 5))(5 - (y - 5)) =
10x - 50 + 10y - 50 + (5 - x + 5)(5 - y + 5) =
10x - 10y - 100 + (10 - x)(10 - y) =
10x - 10y - 100 + 100 - 10y - 10x + xy
Tout s’annule et il reste : xy