(25x - 1)² - (4x + 3)² = 9x² - 45
(25x - 1 - 4x - 3)(25x - 1 + 4x + 3) = 9x² - 45
(21x - 4)(29x + 2) = 9x² - 45
609x² + 42x - 116x - 8 - 9x² + 45 = 0
600x² - 74x + 37 = 0
D = (- 74)² - 4 * 600 * 37 = 5476 - 88800 = - 83324 < 0
Ответ : корней нет
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(25x - 1)² - (4x + 3)² = 9x² - 45
(25x - 1 - 4x - 3)(25x - 1 + 4x + 3) = 9x² - 45
(21x - 4)(29x + 2) = 9x² - 45
609x² + 42x - 116x - 8 - 9x² + 45 = 0
600x² - 74x + 37 = 0
D = (- 74)² - 4 * 600 * 37 = 5476 - 88800 = - 83324 < 0
Ответ : корней нет