Bonjour,
Factoriser :
[tex]Q = 6 + 12a[/tex]
[tex]\boxed{Q = 6(1 + 2a)}[/tex]
[tex] R = 5ax + 20ay[/tex]
[tex]\boxed{ R = 5a(x + 4y)}[/tex]
[tex]S = (3x + 1)(2x - 1) + (3x + 1)(3x + 4)[/tex]
[tex] S = (3x + 1)(2x - 1 + 3x + 4)[/tex]
[tex]\boxed{ S = (3x + 1)(5x + 3)}[/tex]
[tex] T = 9x {}^{2} - 64[/tex]
[tex] T = 3 {}^{2} x {}^{2} - 8 {}^{2} [/tex]
[tex] T = (3x) {}^{2} - 8 {}^{2} [/tex]
[tex]\boxed{ T = (3x - 8)(3x + 8)}[/tex]
Bonne journée.
