A=(x+3)(x+2) D=(6x+5)(4x-1) B=(3x+5)(6x+7) E

A=(x+3)(x+2) D=(6x+5)(4x-1) B=(3x+5)(6x+7) E

Bonsoir,

A=(x+3)(x+2)

= x² +2x +3x +6

= x² +5x +6

D=(6x+5)(4x-1)

= 24x² -6x +20x -5

= 24x² +14x  -5

B=(3x+5)(6x+7)

= 18x² +21x +30x +12

= 18x² +51x +12

E =(6x-5) (6x+5)

= 36x² +30x -30x -25

= 36x² -25

C=(2x-5) (5x+1)

F (8x-2)(8x+2)