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Sagot :

Bonsoir,

Factoriser :

C = 5(x-2)-(x-2)²

C = (x-2)(5-(x-2))

C = (x-2)(5-x+2)

C = (x-2)(7-x)

D = 16x²-(x+1)²

D = (4x-(x+1))(4x+(x+1))

D = (4x-x-1)(4x+x+1)

D = (3x-1)(5x+1)

Bonne soirée.

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