Разложите на множители:30x-9x²-70y+49y² - №7959417

Разложите на множители:
30x-9x²-70y+49y²
- Предмет:
  Алгебра
- Автор:
  tucker848
- 5 лет назад

Ответы 1

$30x-9x^2-70y+49y^2=30x-70y-(9x^2-49y^2)= \\\ =10(3x-7y)-(3x-7y)(3x+7y)=(3x-7y)(10-3x-7y)$
- Автор:
  jonathan
- 5 лет назад
- 0
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