AGATHELACHACAL
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Exercice 4:
Développer et réduire chaque expression:
G = 6(3x + 5) - 3x(2 + 5x)
H = (x-7)(5x +11)
J = 4y - (-5+ y)
I= (-4 + 3x)(3 - 8x)
K = -t + 4 + (30 - 2) - (8t - 5)

Sagot :

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Réponse:

G = 6x 3x + 6x5 - 3x x 2 - 3x x 5x

= 18x + 30 - 6x - 15x(au carré)

= 15x(au carré) + 18x - 6x + 30

= 15x(au carré) + 12x + 30

H = x x 5x + x x 11 - 7 x 5x - 7 x 11

= 5x + 11x - 35x - 77

=16x-35x- 77

= -19-77

= - 96

J = 4y + 5 + y

= 5y +5

I = - 4 x 3 + 4 x 8x + 3x x 3 - 3x x 8x

= - 12 + 32x + 9x - 24x(au carré)

= 24x(au carré) - 12 + 32x + 9x

= 24x(au carré) - 12 + 41x