January 2021 1 119 Report
Merci de l'aide :

Développer en utilisant les IR :

7) ( x² + y² )²
8) ( x + [tex] \frac{1}{x} [/tex] )²
6) (x² + 1)²
9) ( 2x - 1 )(2x + 1 )
10) 4( x + [tex] \frac{1}{x} [/tex] )( x - [tex] \frac{1}{x} [/tex] )
11) ( [tex]( \sqrt{x} + \sqrt{y} )( \sqrt{x} - \sqrt{y} )[/tex]
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