bonjour
( 3 x + 5 ) ( x + 2 ) + ( x + 2 )²
3 x² + 6 x + 5 x + 10 + x² + 4 x + 4
= 4 x² + 15 x + 14
aire totale = 4 x² + 15 x + 14 si x = 10 = 400 + 150 + 14 = 564
( x + 2 ) ( 3 x + 5 + x + 2 )
= ( x + 2 ) ( 4 x + 7 )
si x = 10 , = 12 * 47 = 564
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bonjour
( 3 x + 5 ) ( x + 2 ) + ( x + 2 )²
3 x² + 6 x + 5 x + 10 + x² + 4 x + 4
= 4 x² + 15 x + 14
aire totale = 4 x² + 15 x + 14
si x = 10 = 400 + 150 + 14 = 564
( x + 2 ) ( 3 x + 5 + x + 2 )
= ( x + 2 ) ( 4 x + 7 )
si x = 10 , = 12 * 47 = 564