bonjour
6 x = 6 * x
3 ( a + 1) = 3 *a + 3 * 1
8.2 x = 8.2 * x
6 x + 3 = 6 * x + 3
15 - 3 b = 15 - 3 * b
ab = a * b
x² = x * x
10 x³ 10 * x * x * x
4 x² + 6 x - 7 = 4 * x * x + 6 * x - 7
