bjr
48 + 8x = 8 * 6 + 8 * x = 8 (6 + x)
63y - 35 = 7 * 9y - 7 * 5 = 7 (9y - 5)
-2 - 4t = -2 * 1 - 2 * (2t) = -2 (1 + 2t)
6x² - 5x = x * 6x - x * 5 = x (6x - 5)
49y² + 14y = 7y * 7y + 7y * 2 = 7y ( ... + ...)
et
8t² + 6t - 2 = 2 * 4t² + 2 * 3t + 2 * (-1) = 2 (... + ... - .. )
le principe est de partir de k * a + k * b pour arriver à k (a + b)