Répondre :
B=7x - x²
B=x × 7 - x × x
B = x( 7 - x )
E = 6x² + 2x
E = 2x × 3x+2x ×1
E = 2x (3x + 1)
H = 36x² + 8x
H = 4x × 9x + 4x × 2
H = 4x (9x + 2)
Bonne soirée
Réponse:
[tex] b = 7x - x ^{2} [/tex]
[tex]b = x \times 7 - x {}^{2} \times x[/tex]
[tex]b = x(7 - x)[/tex]