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Sagot :

VINS

bonjour

( 2 x + 3 )² = 4 x² + 12 x + 9

( 3 x - 7) ² = 9 x² - 42 x + 49

( 2 x - 3 ) ( 2 x + 3 ) = 4 x² - 9

3 x² + 12 = 3 x ( x + 4 )

4 xy - x²y  = xy ( 4 - x)

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