bjr
tu sais que k(a+b) = k*a + k*b
donc
D = 4*5x + 4*(-2) + 3*2x + 3*(-4)
= 20x - 8 + 6x - 12
= 20x + 6x - 8 - 12
= 26x - 20
Réponse:
Bonjour,
D=4(5x-2)+3(2x-4)
=4*5x+4*(-2)+3*2x+3*(-4)
=20x +(-8)+6x+(-12)
=26x-20
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bjr
tu sais que k(a+b) = k*a + k*b
donc
D = 4*5x + 4*(-2) + 3*2x + 3*(-4)
= 20x - 8 + 6x - 12
= 20x + 6x - 8 - 12
= 26x - 20
Réponse:
Bonjour,
D=4(5x-2)+3(2x-4)
=4*5x+4*(-2)+3*2x+3*(-4)
=20x +(-8)+6x+(-12)
=26x-20