㏒₃²x - ㏒₃x⁵ + 6 = 0
㏒₃²x - 5㏒₃x + 6 = 0
пусть а = ㏒₃x
a² - 5a + 6 = 0
=> a = 3, a = 2
㏒₃x = 3 => 3³ = x => x = 27
㏒₃x = 2 => 3² = x => x = 9
x₁ = 27, x₂ = 9
(8x - 3y)^2 + 16x (-2x + 3y) - 32x^2 = 64x^2 - 48xy + 9y^2 - 32x^2 + 48xy - 32x^2 = 9y^2 = 9*(sqrt (7))^2 = 9* 7 = 63.
(3-a)(a+2)=3(a+2)-a(a+2)=3a+6-a²-2a=-a²+a+6
64*6561/279936=1,5
ОТВЕТ:1,5