(3x + 2)² + (3x - 2)² - 2(9x² - 4) = (3x + 2)² - 2(3x + 2)(3x - 2) + (3x - 2)² =
= [3x + 2 - (3x - 2)]² = (3x + 2 - 3x + 2)² = 4² = 16
Ответ : 16
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(3x + 2)² + (3x - 2)² - 2(9x² - 4) = (3x + 2)² - 2(3x + 2)(3x - 2) + (3x - 2)² =
= [3x + 2 - (3x - 2)]² = (3x + 2 - 3x + 2)² = 4² = 16
Ответ : 16