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Sagot :

INEQUATION

Bonjour,

Factoriser:

(4x - 9)² - (4x - 9) (2x - 5)= (4x-9)(4x-9-2x+5)= (4x-9)(2x-4)= 2(4x-9)(x-2)

MPOWER

Réponse :

Bonjour,

[tex](4x-9)^2-(4x-9)(2x-5)\\\\= \underline{(4x-9)}(4x-9)-\underline{(4x-9)}(2x-5)\\\\= (4x-9)[(4x-9) - (2x - 5)]\\\\= (4x - 9)(4x - 9 - 2x + 5)\\\\= (4x - 9)(4x - 2x - 9 + 5)\\\\= (4x-9)(2x-4)\\\\= (4x - 9) \times 2(x -2)\\\\= 2(4x-9)(x-2)[/tex]

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