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Sagot :

Bonjour,

A=

16x -7x-2

= 9x-2

B=

-35x²  +2x -3 -x²

= -33x² +2x -3

C=

21ab -2ab +b

= 19ab  +b

D=

10b  +3ab +b

= 3ab+ 11b

E=

18x +2x² -3x -2

= 2x²  +15x -2

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