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Sagot :

Bonjour,

(5x-3)² + (2x+2x)²

= 25x² -30x +9 + 16x²

= 41x² -30x +9

Bonjour,

   (5x-3)² + (2x+2x)²

=  25x²-30x+9+(4x)²

=  25x²+16x²-30x+9

=  41x²-30x+9

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