Question

помогите решить логарифм

Answer 1

1)  1* log(9) (9^(-2)) - 2 = -2 - 2 = -4
2) a)log(3) x = - 4
x = 3^(-4)
x = 1/81
b)  log(x)  64 = 6
64 = x^6
2^6 = x^6
x= 2
3)  5^x > 7
x = log(5) 7