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Lola9999
@Lola9999
May 2019
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Bonjour excusez moi de vous déranger mais pourriez vous factoriser cette expression ? Merci.
(3x -1)^2 -81
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nguyenso9
Verified answer
Bonsoir,
(3x - 1)² - 81
= (3x - 1)² - 9²
= (3x - 1 + 9)(3x - 1 - 9)
= (3x + 8)(3x - 10)
2 votes
Thanks 1
Lola9999
Merci
nguyenso9
De rien
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Verified answer
Bonsoir,(3x - 1)² - 81
= (3x - 1)² - 9²
= (3x - 1 + 9)(3x - 1 - 9)
= (3x + 8)(3x - 10)