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Sagot :

SDU61

Bonjour !

3(x-1)² - 4(x-1)(x+2)

= 3(x-1)(x-1) - 4(x+2)(x-1)

= (3(x-1) - 4(x+2))(x-1)

= (3x-3-4x-8)(x-1)

= (-x-11)(x-1)

= -(x+11)(x-1)

N'hésite pas si tu as une question :)

AYUDA

bjr

3(x-1)² - 4(x-1) (x+2)

= 3 (x-1) (x-1) -4 (x-1) (x+2)

= (x-1) (3 (x-1) - 4(x+2))

= (x-1) (3x - 3 - 4x - 8)

= (x-1) (-x - 11)

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