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Sagot :

KINGMELAS

Réponse:

[tex]x(2x + 5) = x(x + 3) \\ 2x {}^{2} + 5x = x {}^{2} + 3x \\ 2x {}^{2} + 5x - x {}^{2} - 3x = 0 \\ x { }^{2} + 2x = 0 \\ x(x + 2) = 0 \\ soit \\ x = 0 \: \: \: \: \: ou \\ x + 2 = 0 = = = > x = - 2[/tex]

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