Répondre :
-2
--6
-6 +2 = -4
16
16-9 = 7
4/3
4/3 +2 = 4/3+6/3 = 10/3
(10/3)² = 100/9
100/9 -9 = 100/9 +81/9 = 19/9
x
3x
9x²
9x²-9 = 9(x²-1)
-2
--6
-6 +2 = -4
16
16-9 = 7
4/3
4/3 +2 = 4/3+6/3 = 10/3
(10/3)² = 100/9
100/9 -9 = 100/9 +81/9 = 19/9
x
3x
9x²
9x²-9 = 9(x²-1)