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williwiwi59
@williwiwi59
June 2021
1
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L'exercice 1 et 2 svp URGENT MERCI
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jujitsuzakaria
1) voir piéce jointe
2) a)
A=(y+5)(y-2)-6(y+5)
=y²-2y+5y-10-6y-30
=y²-3y-40
b)
A=(y+5)(y-2)-6(y+5)=(y+5)[(y-2)-6)]=(y+5)(y-2-6)=(y+5)(y-8)
c)
(y+5)(y-8)=0
y+5=0 ou y-8=0
y=-5 ou y=8
1 votes
Thanks 1
williwiwi59
merci beaucoup
jujitsuzakaria
de rien
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2) a)
A=(y+5)(y-2)-6(y+5)
=y²-2y+5y-10-6y-30
=y²-3y-40
b)
A=(y+5)(y-2)-6(y+5)=(y+5)[(y-2)-6)]=(y+5)(y-2-6)=(y+5)(y-8)
c)
(y+5)(y-8)=0
y+5=0 ou y-8=0
y=-5 ou y=8