|
d)
|
Applique les propriétés des puissances et calcule. |
(8a)2
|
= 82 . a2 = 64a2 |
(–
3 – a2) .
2a
|
= – 3 . 2a – a2. 2a = – 6a – 2a3 |
(–
6b)2 |
= (– 6)2 . b2 = 36b2 |
(a2b)4
|
= (a2)4. (b)4 = a8 . b4 |
(–
3x)3 |
= (– 3)3 . x3 = – 27x3 |
(xy2)3
|
= (x)3 . (y2)3 = x3 . y6 |
(–
3a2)3 |
= (– 3)3 . (a2)3 = – 27a6 |
(–
a2b)3 |
= (– a2)3 . (b)3 = – a6b3 |
(8
+ a) . 2 |
= 8 . 2 + a . 2 = 16 + 2a |
a2
. (a3
+ 3)
|
= a2 . a3 + a2 . 3 = a5 + 3a2 |
(–
4 + b) . 3 |
= – 4 . 3 + b . 3 = – 12 + 3b |
(x2
+ 3)
.
(x2
–
3) |
= x2 . x2+ x2 . (– 3) + 3 . x2 + 3 . (– 3) = x4 + (– 3x2) + 3x2 + (– 9) = x4 – 9 |
2
. (– 3 –
x) |
= 2 . (– 3) – 2 . x = – 6 – 2x |
(5a
– 3) . (2b –
2) |
= 5a . 2b + 5a . (– 2) + (– 3) . 2b + (– 3) . (– 2) = 10ab – 10a – 6b + 6 |