Question

1)2^x>=1/4

2)5^(-2,1p)*5^(-3,9p), при p=-1/6

Answer 1

1) 2^x >= 2^(-2),  x>=-2,  (-беск; -2]

2)  ... 5^(-2,1p - 3,9p) = 5^(-6p) = 5^ (-6*(-1/6)) = 5