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lalacmoi
@lalacmoi
June 2021
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Besoiin d'aide svp.. C'est urgent c'est pour demain , c'est le 22 ( piece jointe ) merciiii d'avance <3
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choupp
Exercice 22 :
O(x) = (4x + 3)² - 2(4x + 3) (x + 2)
= (4x + 3) (4x + 3 - 2x -4)
=
(4x + 3) (2x -1)
P(x) = 4x² + 4x + 1 + (2x + 1) (x - 2)
= (2x + 1)² + (2x + 1) (x - 2)
= (2x + 1) (2x + 1 + x - 2)
=
(2x + 1) (3x -1)
Q(x) = 49 - (x + 2)²
= (7 - x - 2) (7 + x + 2)
=
(5 - x) (9 + x)
R(x) = x² - 25 + 2(x - 5) (x + 3)
= (x - 5) (x + 5) + 2(x - 5) (x + 3)
= (x - 5) (x + 5 + 2x + 6)
=
(x - 5) (3x + 11)
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O(x) = (4x + 3)² - 2(4x + 3) (x + 2)
= (4x + 3) (4x + 3 - 2x -4)
= (4x + 3) (2x -1)
P(x) = 4x² + 4x + 1 + (2x + 1) (x - 2)
= (2x + 1)² + (2x + 1) (x - 2)
= (2x + 1) (2x + 1 + x - 2)
= (2x + 1) (3x -1)
Q(x) = 49 - (x + 2)²
= (7 - x - 2) (7 + x + 2)
= (5 - x) (9 + x)
R(x) = x² - 25 + 2(x - 5) (x + 3)
= (x - 5) (x + 5) + 2(x - 5) (x + 3)
= (x - 5) (x + 5 + 2x + 6)
= (x - 5) (3x + 11)