| 1 − x3 | ||
a) | ||
| 3(1+x+x2) |
| x2 + 2x +1 | ||
b) | ||
| x2 + 8x+ 7 |
| x3 − x2 −x + 1 | ||
c) | ||
| x4 − 2x2 + 1 |
| 1−x3 | (1−x)(1+x+x2) | 1 | |||
= | = | (1−x) | |||
| 3(1+x+x2) | 3(1+x+x2) | 3 |
| x2+2x+1 | (x+1)2 | x+1 | |||
= | = | ||||
| x2+8x+7 | (x+7)(x+1) | x+7 |
| x3−x2−x+1 | x2(x−1)−(x−1) | (x−1)(x2−1) | 1 | ||||
= | = | = | |||||
| x4−2x2+1 | (x2−1)2 | (x2−1)2 | x+1 |