Sagot :
Bonjour,
double distributivité
A) ( x + 2) ( 2x + 3 )
= 2x² +3x +4x +6
= 2x² +7x +6
B) ( 2x +1 ) ( x- 4)
= 2x² -8x +x -4
= 2x² -7x -4
C) ( 3x -7 ) ( 5 - 4 x )
= 15x -12x² -35 + 28x
= -12x² + 43x -35
Bonjour,
double distributivité
A) ( x + 2) ( 2x + 3 )
= 2x² +3x +4x +6
= 2x² +7x +6
B) ( 2x +1 ) ( x- 4)
= 2x² -8x +x -4
= 2x² -7x -4
C) ( 3x -7 ) ( 5 - 4 x )
= 15x -12x² -35 + 28x
= -12x² + 43x -35