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ORIGINALCOCA
Answered

Bonjour vous pouvez m'aider en math je suis en 4e c'est sur les expressions il faut les détailler :

A = 5x (4x + 4)
B = (5z + 7) x (-3x)
C = 4z (-3x - 10)
D = (3x - 7) x (-7z)
E = 3 (-6z - 8)
F = (9x - 5) x 4x
G = 9 (8z - 9)
H = 8 (9z - 8)
I = (-10 - 4) x (-3z)
J = 4x (-2x - 6)
K = (2x - 100) x (-4x)
L = 5x (-x + 4)
M = (-2x + 2) x x (Le dernier truc c'est fois x sur la M)
N = (-2x + 8) x 7
O = (2x + 2) x 3

Sagot :

SVANT

Réponse :

A = 5x (4x + 4)

A = 5x×4x + 5x×4

A = 20x² + 20x

B = (5z + 7) x (-3x)

B = -3x×5z + (-3x)×7

B = -15xz - 21x

C = 4z (-3x - 10)

C = 4z×(-3x) + 4z×(-10)

C = -12xz - 40z

D = (3x - 7) x (-7z)

D = -7z×3x - 7z×(-7)

D = -21xz + 49z

E = 3 (-6z - 8)

E = 3×(-6z) + 3×(-8)

E = -18z - 24

F = (9x - 5) x 4x

F = 4x×9x + 4x×(-5)

F = 36x² - 20x

G = 9 (8z - 9)

G = 9×8z + 9×(-9)

G = 72z - 81

H = 8 (9z - 8)

H = 8×9z + 8×(-8)

H = 72z - 64

I = (-10 - 4) x (-3z)            

I = -14 × (-3z)

I = 42z

J = 4x (-2x - 6)

J = 4x×(-2x) + 4x×(-6)

J = -8x² - 24x

K = (2x - 100) x (-4x)

K = -4x×2x - 4x×(-100)

K = -8x² + 400x

L = 5x (-x + 4)

L = 5x×(-x) + 5x×4

L = -5x² + 20x

M = (-2x + 2) × x

M = x×(-2x) + x×2

M = -2x² + 2x

N = (-2x + 8) x 7

N = 7×(-2x) + 7×8

N = -14x + 56

O = (2x + 2) x 3

O = 3×2x + 3×2

O = 6x + 6

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