| x | 2x − 25 | |||
a) | + | |||
| x − 5 | x2 − 7x + 10 |
| (x − 2)3 | 4 − x2 | |||
b) | : | |||
| 8 − x3 | x2 + 2x + 4 |
| x | 2x−25 | x | 2x−25 | x(x−2) | |||||
+ | = | + | = | + | |||||
| x−5 | x2−7x+10 | x−5 | (x−2)(x−5) | (x−2)(x−5) |
| 2x−25 | x2−2x+2x−25 | (x−5)(x+5) | ||||
= | = | |||||
| (x−2)(x−5) | (x−2)(x−5) | (x−2)(x−5) |
| x | 2x−25 | x | 2x−25 | x(x−2) | |||||
+ | = | + | = | + | |||||
| x−5 | x2−7x+10 | x−5 | (x−2)(x−5) | (x−2)(x−5) |
| 2x−25 | x2−2x+2x−25 | (x−5)(x+5) | ||||
= | = | |||||
| (x−2)(x−5) | (x−2)(x−5) | (x−2)(x−5) |