x₁ =
x₂ =
Объяснение:
(9x−3)² − (x−13)² = 0
81x² - 54x + 9 - x² + 26x - 169 = 0
80x² - 28x - 160 = 0
20x² - 7x - 40 = 0
D = (-7)² - 4 × 20 × (-40) = 49 + 3200 = 57²
x₁ =
x₂ =
Объяснение:
(9x−3)² − (x−13)² = 0
81x² - 54x + 9 - x² + 26x - 169 = 0
80x² - 28x - 160 = 0
20x² - 7x - 40 = 0
D = (-7)² - 4 × 20 × (-40) = 49 + 3200 = 57²