urgent pour dm Reduction d'une expression litteral A=3X(-5c)+3X(-8)-4cX(-5c)+4cX8 B=3X5-3X6t-2tX5-2tX(-6t) C=dX7-dXd-5X7-5X(-d) D=5nX3+5nX5n-3X3-3X5n
Mathématiques
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Question
urgent pour dm
Reduction d'une expression litteral
A=3X(-5c)+3X(-8)-4cX(-5c)+4cX8
B=3X5-3X6t-2tX5-2tX(-6t)
C=dX7-dXd-5X7-5X(-d)
D=5nX3+5nX5n-3X3-3X5n
Reduction d'une expression litteral
A=3X(-5c)+3X(-8)-4cX(-5c)+4cX8
B=3X5-3X6t-2tX5-2tX(-6t)
C=dX7-dXd-5X7-5X(-d)
D=5nX3+5nX5n-3X3-3X5n
1 Réponse
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1. Réponse nonoduchablais
Salut :)
A = 3 X (-5c) + 3 X (-8) -4c X (-5c) + 4c X 8
A =-15c - 18 + 20c² + 32c
A = 20c² + 17c - 18
B = 3 X 5 - 3 X 6t - 2t X 5 - 2t X (-6t)
B = 15 - 28t - 10t + 12t²
B = 12t² - 38t + 15
C = d X 7 - d X d - 5 X 7 - 5 X (-d)
C = 7d - d² - 35 + 5d
C = -d² + 12d - 35
D = 5n X 3 + 5n X 5n - 3 X 3 - 3 X 5n
D = 15n + 25n² - 9 - 15n
D = 25n² - 9
J'espère t'avoir aidé(e)! :)