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Sagot :

Bonsoir,

a= 5x-15

b= -6x -10

c= -6x² +3x

d = 6x +15x² +8 +20x

=  15x² +26x   +8

e= -2x +2x  +x -1

=  x-1

f= 16x² -24x +9

(IR)

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