| f) |
Réduis les expressions qui peuvent l'être. |
| –2a
. (– 3b) = |
–2
. a . (– 3) . b –2 . (– 3) . a . b 6 . ab 6ab |
5x2
– 3x2
= |
2x2 |
3b
– b2
= |
3b
– b2 |
| –
4a .
(– 2a) = |
(–
4) . a . (– 2) . a (– 4) . (– 2) . a . a 8 . a2 8a2 |
4x3
– x3
= |
3x3 |
3b2
– b2
= |
2b2 |
| – 4a
– 2a = |
–
6a |
– 2x2
– 3x2
= |
–
5x2 |
3b
. (– b2)
= |
3
. b . (– b2) 3 . (– b3) – 3b3 |
| 2a
– 3b = |
2a
– 3b |
x2
– x = |
x2
– x |
– 3b
– b = |
–
4b |
| – 2a
+ 3 a = |
a |
–
x . x2
= |
–
x3 |
– b3
+ 2b3
= |
b3 |