Développer, réduire et ordonner : Exercice 1 A = 3 - (x + 5) C = 3+ y + (5 - y) - (3 - y) E = -4(-3x - 1) - (4x + 7) G = 2 + x + (8 - x) - (2-x) I = 5x - 4(1 -

Bonjour,

A = 3 - (x + 5) = 3-x+5 = x +8

C = 3+ y + (5 - y) - (3 - y) = 3+x +5 -y -3 +y = x +5

E = -4(-3x - 1) - (4x + 7) =12x +4 -4x -7=

G = 2 + x + (8 - x) - (2-x) = 2+x +8-x  -2 +x =

I = 5x - 4(1 - 10x) = 5x -4 +40x =

K = x - 4(x - 3) + 3 (x - 2) =   x -4x +12 +3x -6=

M = 4x - 3(x + 7) + 2(x - 3) = 4x -3x -21 +2x -6=

0 = 10x + 2(1-x) - 3(4x + 2) = 10x +2 -2x -12x -6 =

P = 4x² + x(2 - x) - (2x² - 1) =  4x² +2x -x² -2x² +1=

B = x + (5 - y)= x +5-y=

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

F = y + (3 - x) = y+3 -x=

H = 5(3x + 2) - (x - 5) = 15x +16 -x -6=

J = 2(x + 8) - (x + 6) = 2x +16 -x -6=

L = 4(x - 1) + 5(7 - 2x) = 4x -4 +35 -14x =

N = 2(x - 1) + x(3 + x) = 2x -2 +3x +x² =

Je te laisse faire les opérations, le plus gros est  fait.

Bonjour,

Explications étape par étape :

Développer, réduire et ordonner :

Exercice 1

A = 3 - (x + 5)

A = 3 - x - 5

A = -x - 2

C = 3+ y + (5 - y) - (3 - y)

C = 3 + y + 5 - y - 3 + y

C = 3 - 3 + 5 + y - y + y

C = 5 + y

E = -4(-3x - 1) - (4x + 7)

E = -4 * (-3x) - 4 * (-1) - 4x - 7

E = 12x + 4 - 4x - 7

E = 8x - 3

G = 2 + x + (8 - x) - (2-x)

G = 2 + x + 8 - x - 2 + x

G = 2 - 2 + x - x + 8 + x

G = 8 + x

I = 5x - 4(1 - 10x)

I = 5x - 4 * 1 - 4 * (-10x)

I = 5x - 4 + 40x

I = 45x - 4

K = x - 4(x - 3) + 3 (x - 2)

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

K = x - 4x + 12 + 3x - 6

K = -3x + 3x + 12 - 6

K = 6

M = 4x - 3(x + 7) + 2(x - 3)

M = 4x - 3x - 21 + 2x - 6

M = 3x - 27

O = 10x + 2(1-x) - 3(4x + 2)

O = 10x + 2 - 2x - 12x - 6

O = 10x - 14x + 2 - 6

O = -4x - 4

P = 4x2 + x(2 - x) - (2x2 - 1)

P = 4x² + 2x - x² - 2x² + 1

P = 4x² - 3x² + 2x + 1

P = x² + 2x + 1

B = x + (5 - y)

B = x + 5 - y

D = 2 - (x + 3)

D = 2 - x - 3

D = -x - 1

F = y + (3 - x)

F = y + 3 - x

H = 5(3x + 2) - (x - 5)

H = 15x + 10 - x + 5

H = 14x + 15

J = 2(x + 8) - (x + 6)

J = 2x + 16 - x - 6

J = x + 10

L = 4(x - 1) + 5(7 - 2x)

L = 4x - 4 + 35 - 10x

L = -6x + 31

N = 2(x - 1) + x(3 + x)

N = 2x - 2 + 3x + x²

N = x² + 5x - 2