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12327
@12327
May 2019
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Bonjour URGENT
je n'arrive pas à mon exercice de maths pouvez vous m'aider merci d'avance
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Commentaires (4)
A)
A = (x+2)(x-3)+(x-3)
= x²+2x-3x-6+x-3
= x²-9
B = (2x-3)²
= 4x²-12x+9
b)
si x=3, A = 3² - 9 = 0
si x=1,5 , B = (2*1,5-3)² = (3-3)² = 0
1 votes
Thanks 1
12327
Merci beaucoup
12327
Juste tu le refaire en remplaçant la lettre x par des e parce que je n'arrive pas à faire la différence entre la lettre x et le signe merci
12327
A ok merci beaucoup salut
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A = (x+2)(x-3)+(x-3)
= x²+2x-3x-6+x-3
= x²-9
B = (2x-3)²
= 4x²-12x+9
b)
si x=3, A = 3² - 9 = 0
si x=1,5 , B = (2*1,5-3)² = (3-3)² = 0