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LindaLicornes
@LindaLicornes
May 2019
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Bonjour ! merci de bien vouloir m'aider pour ces deux expressions ! il faudrait les réduires en détaillant les calculs . merci d'avance:)
B= -7a au carré + a x (4a-9a) + (-5 + 2a)-6a
D= 3+(2×a-12) + 15a au carré - 9a + a × 4a au carré
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B = - 7 a² + a ( 4 a - 9 a) + ( - 5 + 2 a) - 6 a
b = - 7 a² + 4 a² - 9 a² + ( 30 a - 12 a²)
b = - 7 a² + 4 a² - 9 a² + 30 a - 12 a²
b = - 24 a² + 30 a
d = 3 + ( 2 a - 12) + 15 a² - 9 a + a * 4 a²
d = 3 + 2 a - 12 + 15 a² - 9 a + 4 a ³
d =
4 a³ + 15 a² - 7 a - 9
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marc14
Bonjour
b= 7 a2+(4a-9a)+(-5+2a2)-6a
7a+4a-9a+(-5+2a)-6a
d=3+(2×a-12)+15a-9a+a×4
3+2×a-12+(15a-9a)+a×4
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Bonjour, merci de bien vouloir me donner votre aide, car je cale sur ces deux exercices de mon dm. Merci d'avance.
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Verified answer
B = - 7 a² + a ( 4 a - 9 a) + ( - 5 + 2 a) - 6 ab = - 7 a² + 4 a² - 9 a² + ( 30 a - 12 a²)
b = - 7 a² + 4 a² - 9 a² + 30 a - 12 a²
b = - 24 a² + 30 a
d = 3 + ( 2 a - 12) + 15 a² - 9 a + a * 4 a²
d = 3 + 2 a - 12 + 15 a² - 9 a + 4 a ³
d = 4 a³ + 15 a² - 7 a - 9
b= 7 a2+(4a-9a)+(-5+2a2)-6a
7a+4a-9a+(-5+2a)-6a
d=3+(2×a-12)+15a-9a+a×4
3+2×a-12+(15a-9a)+a×4