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Sagot :

AMARBNEYDJIKFALL

Réponse:

bonsoir,

E= 12x au carré - x ×( -2 +20x -10 )

E= 12 x au carré +2x -20x au carré +10x

E= -8x au carré +12x

E= x (-8x +12)

GLOUPSIIII
3X x (4 x X) + (-X) x ( -2 + 5 x 4X + 5 x (-2))
= 3X x (4 x X) + (-X) x ( -2 + 20X - 10)
= 12X*2 + (-X) x (-12 + 20X)
= 12X*2 - X x (-12 + 20X)
= 12X*2 + 12X + 20X* 2
= -8X*2 + 12X

SOLUTION :

= -8X*2 + 12X

Voilà :)

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