1) 1/(корень(9)(0,0016))=1/(корень(9)(0,2^4)) = (1/0,2)^(4/9) = (0,2)^(- 4/9) ->
-> (0,2)^(v) = (0,2)^( - 4/9) -> v = - 4/9
2) 5^(x)*0,2 = 5^(x)*(1/5) = 5^(x)*(5)^(-1) = 5^(x-1)
25^(6,8x)*корень(5) = 5^(6,8*2)*5^(1/2) = 5^(13,6x+1/2)
5^(x-1) = 5^(13,6x+1/2) -> x - 1 = 13,6x + 1/2 -> 12,6x = - 1,5 -> x = - 0,5/4,2 = - 1/8,4
= - 0,11905
3) 1/(3^d + 162) = 1/(3^(d+1)) -> 3^(d+1) - 3^d - 162 = 0 -> 3^d(3 - 1) = 162 -> 3^d = 81
-> 3^d = 3^4 -> d = 4