Bonsoir,
6x² - 5x = 6x*x - 5*x = (6x - 5)*x
49y² + 14y = 7y*7y + 7y*2 = 7x(7y + 2)
9n² - 6n = 3n*3n - 3n*2 = 3n( 3n - 2)
8t²+6t+2 = 2*4t² + 2*3t + 2*1 = 2*(4t²+3t+1)
* = multiplication
Bonne soirée.
