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Sagot :

VINS

bonsoir

( x - 1 )² - ( 4 x + 3 )²

= x² - 2 x + 1 - ( 16 x² + 24 x + 9 )

= x² - 2 x + 1 - 16 x² - 24 x -  9

=  - 15 x² - 26 x - 8

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