(x-4b)(x^2+4xb+16b^2)+64b^3+x^3+b^2 при х=-1 и b=2 - №19794382

(x-4b)(x^2+4xb+16b^2)+64b^3+x^3+b^2 при х=-1 и b=2
- Предмет:
  Алгебра
- Автор:
  jethpdq
- 5 лет назад

Ответы 1

Формула разности кубов:(x-4b)(x²+4xb+16b²)=х³-64b³.(x-4b)(x²+4xb+16b²)+64b³+x³+b²==(х³-64b³)+64b³+x³+b²=х³-64b³+64b³+x³+b²=2x³+b²При х=-1 и b=2 2x³+b²=2·(-1)³+2²=-2+4=2.О т в е т. 2.
- Автор:
  muffy
- 5 лет назад
- 0
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