Разложите на множители: a) ab-ac+5b-5c б) 25a²-(2a-8)² - №19962821

Разложите на множители:
a) ab-ac+5b-5c
б) 25a²-(2a-8)²
- Предмет:
  Алгебра
- Автор:
  tessaw7i2
- 6 лет назад

Ответы 2

Спасибо ОГРОМНОЕ!)))
- Автор:
  shastaterrell
- 6 лет назад
- 0
a) ab-ac+5b-5c=а(b-c)+5(b-c)=(a+5)·(b-c)б) 25a²-(2a-8)²= (5a)²-(2a-8)²=(5a+(2a-8))·(5a-(2a-8))=(7a-8)·(3a+8)
- Автор:
  finnle
- 6 лет назад
- 0
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