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Sagot :

Bonjour

(4x - 5)² = 3 (4x - 5)

(4x - 5) (4x + 5 + 3) = 0

(4x - 5) (4x + 8) = 0

4 (x - 2) (4x - 5) = 0

x - 2 = 0       ou          4x - 5 = 0

x = 2                           4x = 5

                                   x = 5/4.

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