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Stellaaa
@Stellaaa
May 2019
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Bonjour pouvez-vous vous m'aider s'il vous plaît je n'y arrive pas.
Transformer l'expression soulignée,pour faire apparaître le facteur communs, puis factoriser :
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Verified answer
Bonjour,
C) (10-5x)(x+2)+(1-x)(2x-1)
10-5x = 5(2x-1)
C = 5(2x-1)(x+2)+(1-x)(2x-1)
on factorise (2x-1)
(2x-1)[5(x+2)+(1-x)] =
(2x+1)(5x+10+1-x)=
(2x+1)(4x+11)
D) (4x+4) = 4(x+1)
4
(x+1)
(1-2x)+
(x+1)
(x+1) =
(x+1)[(...finis)]
envoie, je corrigerais
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Verified answer
Bonjour,C) (10-5x)(x+2)+(1-x)(2x-1)
10-5x = 5(2x-1)
C = 5(2x-1)(x+2)+(1-x)(2x-1)
on factorise (2x-1)
(2x-1)[5(x+2)+(1-x)] =
(2x+1)(5x+10+1-x)=
(2x+1)(4x+11)
D) (4x+4) = 4(x+1)
4(x+1)(1-2x)+(x+1)(x+1) =
(x+1)[(...finis)]
envoie, je corrigerais