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Sagot :

VINS

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A = x² + 3 x + 4 x + 12

= x² + 7 x + 12

B = 15 z + 18 z² + 20 + 24 z

= 18 z² + 39 z + 20

C = 2 y² + 8 y + 6 y + 24

= 2 y² + 14 y + 24

D = 21 t + 35 t² + 24 + 40 t

= 35 t² + 61 t + 24

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