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Sagot :

Bonjour,

Réduire:

16b²-8b-8b+4-4= 16b²-16b

t²+5t-5t-25-(t²-5t-5t+25)= -25-t²+10t-25= 10t-50

9x^6+3x³y+3x³y+y²-(9x^6-3x³y+3x³y-y²)= 9x^6+y²+6x³y+y²-9x^6+y²= 6x³y+2y²

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