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mamagironde21
@mamagironde21
January 2021
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Bonsoir,
A) exprimer en fonction de x l'aire de la partie hachurée
B) développer puis réduire
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coolllinneee
Bonsoir, alors j'utiliserais ce signe "^" pour dire "au carré".
A) (3+2x)*(3x-1)- [2x*(3x-1)] /2
B) =9x-3+6x^-2x-(6x^-2x)/2
=7x-3+6x^-3x^-x
=6x-3+3x^
voila
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Thanks 1
nonotata
Bonsoir
aire trapeze = (base a +base b) x hauteur/2
aire = ( 3 +3+2x) * (3x-1)/2
aire =(6+2x)(3x-1) /2
b)
(6+2x)(3x-1) /2
(18x-6+6x²-2x) /2
(6x²+16x-6) /2
3x² +8x-3
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Bonjour, Aider moi le plus rapidement possible c l'exo 3
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Lista de comentários
A) (3+2x)*(3x-1)- [2x*(3x-1)] /2
B) =9x-3+6x^-2x-(6x^-2x)/2
=7x-3+6x^-3x^-x
=6x-3+3x^
voila
aire trapeze = (base a +base b) x hauteur/2
aire = ( 3 +3+2x) * (3x-1)/2
aire =(6+2x)(3x-1) /2
b)
(6+2x)(3x-1) /2
(18x-6+6x²-2x) /2
(6x²+16x-6) /2
3x² +8x-3