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LOULAKAR

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Effectuer les calculs :

5^2 x (7^2 - 50)

= 25 x (49 - 50)

= 25 x (-1)

[tex]\bf{= (-25)}[/tex]

5 - (5 x 2 - 4^2)^2

= 5 - (10 - 16)^2

= 5 - (-6)^2

= 5 - 36

[tex]\bf{= (-31)}[/tex]

(2 - 3)^2 - (2^2 - 3^2)

= (-1)^2 - (4 - 9)

= 1 - (-5)

= 1 + 5

[tex]\bf{= 6}[/tex]

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