| c) | Réduis les sommes suivantes si cela est possible. |
3a2
+ 5a2 = |
8a2 |
4a
– 5a = |
–
a |
2b
– b2 = |
2b
–
b2 |
5a2
– 3a2 = |
2a2 |
–
2a2 – 5a2 = |
–
7a2 |
b2
– 3b2 = |
–
2b2 |
6a2
– a2 = |
5a2 |
3a
+ 5a2 = |
3a
+ 5a2 |
–
3b + 2b = |
–
b |
3a2
– 5a2 = |
–
2a2 |
–
4a + 3a2 = |
–
4a + 3a2 |
–
b – b = |
–
2b |
–
2a2 – 3a2 = |
–
5a2 |
–
4a + 3a = |
–
a |
–
b2 – b2 = |
–
2b2 |