144 - x² = 0
(12 - x)(12 + x) = 0
12 - x = 0 12+ x = 0
x₁ = 12 x₂ = - 12
Ответ : - 12
(x - 3)² - (x - 1)(x + 1) + 6x = x² - 6x + 9 - (x² - 1) + 6x = x² - 6x + 9 - x² + 1 + 6x = 10
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Verified answer
144 - x² = 0
(12 - x)(12 + x) = 0
12 - x = 0 12+ x = 0
x₁ = 12 x₂ = - 12
Ответ : - 12
(x - 3)² - (x - 1)(x + 1) + 6x = x² - 6x + 9 - (x² - 1) + 6x = x² - 6x + 9 - x² + 1 + 6x = 10