Réponse :
A= (5x-10) (-8x+6) B= (-6x+10) (x+8) C= (7x-3) (7x+8)
=-40x2+30x-80x-60 = -6x2-48x+10x+80 = 49x2+56x-21x-24
=40x2-50x-60 =-6x2-38x+80 = 49x2+35x-24
=4x2-5x-6 = -3x2-19x+40 F=-3x2-x+4
D= (8x-1) (2x+5) E= (-x-10) (-8x+3) F= (3x+3) (-3x+4)
= 16x2+40x-2x-5 = 8x2-3x+80x-30 = -9x2+12x-9x+12
= 16x2+38x-5 = 8x2+77x-30 = -9x2-3x+12
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Réponse :
A= (5x-10) (-8x+6) B= (-6x+10) (x+8) C= (7x-3) (7x+8)
=-40x2+30x-80x-60 = -6x2-48x+10x+80 = 49x2+56x-21x-24
=40x2-50x-60 =-6x2-38x+80 = 49x2+35x-24
=4x2-5x-6 = -3x2-19x+40 F=-3x2-x+4
D= (8x-1) (2x+5) E= (-x-10) (-8x+3) F= (3x+3) (-3x+4)
= 16x2+40x-2x-5 = 8x2-3x+80x-30 = -9x2+12x-9x+12
= 16x2+38x-5 = 8x2+77x-30 = -9x2-3x+12