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sarahbzn8
@sarahbzn8
January 2021
1
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Bonjour j'ai une exercice de math dont je n'arrive pas à faire le voilà :
Simplifié le plus possible l'écriture
des expressions littéraire suivantes :
1×a-1×b
(3×a-5)×(×3-1)
4+x×(-2)-3×x3×7
Mercii de m'aidez ☺
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maudmarine
Verified answer
Bonsoir,
1×a-1×b
= a - b
(3×a-5)×(×3-1)
= (3a - 5) * (x
³ - 1)
= 3ax
³ - 3a - 5x³ + 5
4+x×(-2)-3×x3×7
= 4 - 2x - 3x
³ * 7
= 4 - 2x - 21x
³
= - 21x
³ - 2x + 4
0 votes
Thanks 1
sarahbzn8
Mercii bcp
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Lista de comentários
Verified answer
Bonsoir,1×a-1×b
= a - b
(3×a-5)×(×3-1)
= (3a - 5) * (x³ - 1)
= 3ax³ - 3a - 5x³ + 5
4+x×(-2)-3×x3×7
= 4 - 2x - 3x³ * 7
= 4 - 2x - 21x³
= - 21x³ - 2x + 4