Bonjour,
A = 5x + 2x + 10x
A = 17x
B = 3ax² - 3ax + 3a
B = 3a (x²-x + 1)
C = 9x (x-3) + 9x (10+2x)
C = 9x (x -3 + 10 + 2x)
D = (2x + 1 ) (8+x) - (3x - 1) (2x + 1)
D = (2x + 1) ( 8 + x - 3x + 1)
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Bonjour,
A = 5x + 2x + 10x
A = 17x
B = 3ax² - 3ax + 3a
B = 3a (x²-x + 1)
C = 9x (x-3) + 9x (10+2x)
C = 9x (x -3 + 10 + 2x)
D = (2x + 1 ) (8+x) - (3x - 1) (2x + 1)
D = (2x + 1) ( 8 + x - 3x + 1)