Exercice numéro \7:
partie a=
L= (2x + 10)2 - (2x+ 9)²
L = 4x2 + 40x + 100 (4x2 + 36x + 81)
L = 4x + 19
partie b =
20102 - 2009² = (2 x 1000 + 10)2 - (2 x 1000 + = 9)2 = 4 x 1000 + 19 = 4019[/tex]
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Exercice numéro \7:
partie a=
L= (2x + 10)2 - (2x+ 9)²
L = 4x2 + 40x + 100 (4x2 + 36x + 81)
L = 4x + 19
partie b =
20102 - 2009² = (2 x 1000 + 10)2 - (2 x 1000 + = 9)2 = 4 x 1000 + 19 = 4019[/tex]