Bonjour
[tex]\rule{4cm}{1mm}[/tex]
A = 2x² + 3x
A = 2x × 2x + 3 × x
A = x(2x + 3)
B = x² - 4x
B = x² - (2x)²
B = (x - 2x)(x + 2x) → 3ème identité remarquable
C = x³ - 2x
C = x × x² - 2 × x
C = x(x² - 2)
D = x² - 16
D = x² - 4²
D = (x - 4)(x + 4) → 3ème identité remarquable
E = 2x² + x
E = 2x × x + x × 1
E = x(2x + 1)
F = 4x² - 9
F = (2x)² - 3²
F = (2x - 3)(2x + 3) → 3ème identité remarquable
