Bonjour j’ai un dm de math mais je n’y arrive pas merci à ceux qui m’aideront les ex sont 4,5

Bonjour,

4)

A = (x + 2)²

A = x² + 4x + 4

B = (1 + x)²

B = 1 + 2x + x²

B = x² + 2x + 1

C = (2x + 1)²

C = 4x² + 4x + 1

D = (3 + 2x)²

D = 9 + 12x + 4x²

D = 4x² + 12x + 9

E = (3x + 2)²

E = 9x² + 12x + 4

5)

A = 3y + 3

A = 3 (y + 1)

B = 5x + 15

B = 5 (x + 3)

C = 3 + 3a

C = 3 (1 + a)

D = (2x + 1) (x + 4) + (2x + 1) (3x + 2)

D = (2x + 1) (x + 4 + 3x + 2)

D = (2x + 1) (4x + 6)

E = (x + 7)² - (3x + 5) (x + 7)

E = (x + 7) (3x + 5 - x - 7)

E = (x + 7) (2x - 2)

Bonjour

E

A = x^2 + 4x + 4

B = 1 + 2x + x^2

C = 4x^2 + 4x + 1

D = 9 + 12x + 4x^2

E = 9x ^2 + 12x + 4

F = x ^4 + 10x^2 + 25

Exercice 2

A = 3(x+y)

B = 5(x+3)

C = 3 (1+a)

D = (2x+1)(x+4+3x+2) = (2x+1)(4x+6)

E = (x+7)(x+7-3x+5) = (x+7)(-2x+12)