Как решить (2х-15)(2х+15)-4х+х-14,при х=60 - Дата: 11.07.2019, Автор: jordan57 - №30720910

Как решить (2х-15)(2х+15)-4х+х-14,при х=60
- Предмет:
  Алгебра
- Автор:
  jordan57
- 6 лет назад

Ответы 2

$4 {x}^{2} - 225 - 4x + x - 14 = 4 {x}^{2} - 3x - 239 = 4 \times {60}^{2} - 3 \times 60 - 239 = 4 \times 3600 - 180 - 239 = 13981$
- Автор:
  ceferinocgat
- 6 лет назад
- 0
(2×60-15)×(2×60+15)-4×60+60-14=13981
- Автор:
  brennen
- 6 лет назад
- 0
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