Ex25:Bonsoir,en math,s'il vous plaît, merci. Écrire les expressions suivantes sans parenthèses. A = 2x + 5(8 - x) B = (2x + 5) + (8 - x) C = (2x + 5)(8 - x) D = (2x + 5) x 8-X E = (2x - 5) - (8 - x)
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Réponse:
A = 2x + 40 - 5x
B = 2x + 13 - x
C = 16x - 2x² + 40 - 5x
D = 16x + 40 - x
E = 2x - 5 -8 + x