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Sagot :

MOZI

Bonjour,

(2x - 3)² = 5 (2x - 3)

⇔ (2x - 3)² - 5 (2x - 3) = 0

⇔(2x - 3) (2x - 3 - 5) = 0

⇔ 2 (x - 3/2) (2x - 8) = 0

⇔4 (x - 3/2) ( x  - 4) = 0

⇔ (x - 3/2) ( x  - 4) = 0

⇔ x = 3/2 ou x = 4

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