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lisaam
@lisaam
January 2021
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Bonjour (niveau 3ème)
Est ce que quelqu'un pourrait m'aider à cette exercice ? Merci d'avance.
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maudmarine
Verified answer
Bonjour,
A = (3/4 + x)²
A = 9/16 + 6/4x + x²
A = x² + 6/4x + 9/16
B = (3x - 2/3)²
B = 9x² - 12/3x + 2/9
B = 9x² - 4x + 2/9
C = (5/2x - 1/3) (5/2x + 1/3)
C = - 25/4x + 5/6x - 5/6x - 1/9
C = - 25/4x - 1/9
0 votes
Thanks 1
simoraina619
Verified answer
Bonjour,
je suis sure que c'est juste.
1. = (3/4)² +2(3/4)(x) +x²
= x² +3/2x +9/16
2. =(3x)² -2(3x)(2/4) +(2/3)²
=9x² -12/3x +4/9
= 9x² -4x +4/9
3. = (5/2x)² -(1/3)
= 25/4x² - 1/9
0 votes
Thanks 1
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Lista de comentários
Verified answer
Bonjour,A = (3/4 + x)²
A = 9/16 + 6/4x + x²
A = x² + 6/4x + 9/16
B = (3x - 2/3)²
B = 9x² - 12/3x + 2/9
B = 9x² - 4x + 2/9
C = (5/2x - 1/3) (5/2x + 1/3)
C = - 25/4x + 5/6x - 5/6x - 1/9
C = - 25/4x - 1/9
Verified answer
Bonjour,je suis sure que c'est juste.
1. = (3/4)² +2(3/4)(x) +x²
= x² +3/2x +9/16
2. =(3x)² -2(3x)(2/4) +(2/3)²
=9x² -12/3x +4/9
= 9x² -4x +4/9
3. = (5/2x)² -(1/3)
= 25/4x² - 1/9