bonjour
x
3 x
3 x - 2
x ( 3 x - 2 )
= 3 x² - 2 x
x
x²
- 3 x²
- 3 x² - 2 x
avec - 5
- 5
3 *-5 = - 15
- 15 - 2 = - 17
-17 * -5 = 85
- 5
( - 5 )² = 25
25 * 3 = 75
75 - ( - 10 ) = 85
7/3
7/3 * 3 = 21/3 = 7
7 - 2 = 5
5 * 7/3 = 35/3
7/3
( 7/3)² = 49/9
49/9 * 3 = 147/9
147/9 - 14 /3
147/9 - 42/9
= 105/9
= 35/3