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Sagot :

Salut

[tex]\rule{6cm}{1mm}[/tex]

A = x(-4-y)

A = -4x-xy

B = 2x(x-y+4)

B = 2x²-2xy+8x

C = (4+x)*5

C = 20+5x

C = 5x+20

D = -(3-x)

D = -3+x

D = x-3

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