Natali Belska
Гений
(67463)
3 дня назад
(1/4)^(2x-6) >= 4^(5x-8)
4^(6-2x) >= 4^(5x-8)
(6-2x) >= (5x-8)
7x =< 14
x =< 2
V(13 - 2x) = 5 - x
13 - 2x = (5 - x)^2
13 - 2x = 25 - 10x + x^2
x^2 - 8x + 12 = 0
(x^2 - 2*4*x + 4^2) - 4 = 0
(x - 4)^2 - 2^2 = 0
[(x-4) + 2] * [(x-4) - 2] = 0
(x - 2)(x - 6) = 0
x1 = 2; x2 = 6