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Sagot :

Bonjour,

Réduire sans factoriser :

[tex] = - ( - 8) + ( - 8x {}^{2} - 8x - 1) - (6x + 9) - ( - 9x {}^{2} - 6x + 6)[/tex]

[tex] = 8- 8x {}^{2} - 8x - 1- 6x - 9 + 9x {}^{2} + 6x - 6[/tex]

[tex] = - 8 - 8x {}^{2} - 8x + 9x {}^{2} [/tex]

[tex]\boxed{ = x {}^{2} - 8x - 8 }[/tex]

Bonne journée.

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