calcule A = 4x+7y - 5 si x=2 et y=3 calcule B =(4x-3) (7-2y) si x=2 et y = 3 calcule C = 9x-3-(x+10) (x+10) si x= -8
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Question
calcule A = 4x+7y - 5 si x=2 et y=3
calcule B =(4x-3) (7-2y) si x=2 et y = 3
calcule C = 9x-3-(x+10) (x+10) si x= -8
calcule B =(4x-3) (7-2y) si x=2 et y = 3
calcule C = 9x-3-(x+10) (x+10) si x= -8
1 Réponse
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1. Réponse gibso
A=4x+7y-5 = 4 × 2 + 7×3 -5 = 8+21-5= 29 -5= 24
B=(4× 2-3 ) (7-2y) = (5) ( 7-2×3) = 5× (7-6)= 5×1= 5
C=9×3-(x+10) (x+10)= 27 -(18)× (18)= 9 ×18= 162