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Sagot :

II. A. 5(x-3)
= 5x - 15
B. 0,1(25+3x)
= 0,3x + 2,5
C. 5x (x+2y-5)
= 5x^2 + 10xy - 25x
D. 10(5x+7) + 2(3x-5)
= (50x + 70) + (6x - 10)
= 56x + 60
E. 10y(x+8) + y(3x-5)
= (10yx + 80y) + (3yx - 5x)
= 13yx + 75y

III. A. 3x - 3y
= 3(x-y)
B. 3x + 21
= 3(x+7)
C. 5x + 7x
= x(5+7)
D. 5xy - 4y
= y(5x-4)

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