(6m+5)^2-36m^2-59м+5 при m=321

(6m+5)^2-36m^2-59м+5 при m=321
- Предмет:
  Математика
- Автор:
  scooby-doo7thz
- 5 лет назад

Ответы 1

Упростим:(6m +5) ² -36m² -59m +5 == (6m)² +2*5*6m +5² -36m² -59m +5== 36m² + 60m +25 -36m² -59m +5== m +30при m=321 ⇒ 321+30= 351проверим на полном выражении:(6*321 +5)² - 36 *321² - 59*321 +5 == 1931² - 36*103041 - 18939+5== 3728761 - 3709476 - 18934= 351
- Автор:
  shaun
- 5 лет назад
- 0
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