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Sagot :

A = 4r + 4t = 4(r+t)

B = 7z + 9z = z(7+9)

C = 3y² + 2y = y(3y+2)

D = 4x(x + 2) + 3(x+2) = (x+2) (4x+3)

E = -3y(y+6) + 7(y+6) = (y+6) (7-3y)

F = (x - 1) (5x + 4) + (3 + x) (x - 1) = (x-1) (5x+4+3+x) = (x-1) (6x+7)

Bonne journée.

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