Log2 (x-5/4) = 0

2log4 (3x-7) = 3

Log₂ (x-5/4) = 0 2log₄ (3x-7) = 3

x - 5/4 = 1 log₄ (3x-7) ²=3

x = 1 + 1,25 (3x-7) ² = 4³

x = 2,25 9x² - 42x + 49 = 64

9x² - 42x - 15 = 0

Ответ: {2,25} 3x² - 14x - 5 = 0 D=b²-4ac = 196+60 = 256

x₁ = (-b+√D) / 2a = (14+16) / 6 = 5

x₂ = (-b-√D) / 2a = (14-16) / 6 = - 1/3

Ответ: { - 1/3; 5}