49 = (2x - 7)²
(2x - 7)² = 7²
2x - 7 = 7 или 2x - 7 = - 7
2x = 14 2x = 0
x₁ = 7 x₂ = 0
Ответ : 0 ; 7
Решение на фото..........
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Verified answer
49 = (2x - 7)²
(2x - 7)² = 7²
2x - 7 = 7 или 2x - 7 = - 7
2x = 14 2x = 0
x₁ = 7 x₂ = 0
Ответ : 0 ; 7
Решение на фото..........