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yamine13015
@yamine13015
January 2021
2
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(7y-2) (3-y) -y² +5y aidez moi svp .........?
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supersong
Verified answer
Bonjour,
(7y-2) (3-y) -y² +5y
= 21y - 7y² - 6 + 2y - y² + 5y
= - 8y² + 28y - 6
1 votes
Thanks 0
yamine13015
bonjour merci surpersong
supersong
derien
PAU64
Verified answer
(7y - 2) (3 - y) - y² + 5y
= 7y * 3 + 7y * (- y) - 2 * 3 - 2 * (- y) - y² + 5y
= 21y - 7y² - 6 + 2y - y² + 5y
= - 8y² + 28y - 6
2 votes
Thanks 1
PAU64
les * désignent "fois"
yamine13015
merci mon pote PAU64
PAU64
de rien ;)
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Verified answer
Bonjour,(7y-2) (3-y) -y² +5y
= 21y - 7y² - 6 + 2y - y² + 5y
= - 8y² + 28y - 6
Verified answer
(7y - 2) (3 - y) - y² + 5y= 7y * 3 + 7y * (- y) - 2 * 3 - 2 * (- y) - y² + 5y
= 21y - 7y² - 6 + 2y - y² + 5y
= - 8y² + 28y - 6