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R- Développer et réduire :
A=8 (x-3) ; B=-4 (2x + 5); C = (2 - x) * 3
D--2 (3x - 4); E- 5 (1 + 2x2 ; F = (3x-7)(-5)
G=-* (2 - 4x) ; H = 2x (x - 3) ; I - (3x - 5) * (-7x1
)
J-5x-317x-9) - 7 ; K= 7+ 4x (7x - 8) + 9x2
L=-3x (5 - 4x + 7x (6x-8); M = 719 - 4x) - 2x (x - 8)
N
N = 5x (4x - 2) - 6x (7 - 8x4; P = 8(3x - 4) - (8x - 1)*(-2)
Q = 3(x - 1) - (6x - 1) * (-4); R = 4(2x-3) - 5x (2x - 4)
R
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Sagot :

Réponse:

A = 8 (x-3)

A = 8*x+8*(-3)

A = 8x - 24

B = - 4(2x+5)

B = - 4*2x+(-4)*5

B = - 8x - 20

C = (2-x)3

C = 3*2+3*(-x)

C = 7 - 3x

D = 2(3x-4)

D = 2*3x+2*(-4)

D = 6x - 8

E = - 5(1+2x2)

E = - 5*1+(-5)*2x+(-5)*2

E = - 5 - 10x - 10

E = 15 - 10x

F = (3x-7) (-5)

F = - 5*3x+(-5)*(-7)

F = - 15x+35

G =?

H = 2x(x-3)

H = 2x*x+2x*(-3)

H = 2x^2-6

I = (3x-5) (-7x+1)

I = 3x*(-7x)+3x*1+(-5)*(-7x)+(-5)*1

I = - 21x^2 +3x +35x - 5

I = - 21x^2 + 38x - 5

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