Помогите решить!!!!!!!!

Question

Помогите решить!!!!!!!!

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Answer 1

1) log4(64a) = log4(64)+log4(a) = 3+2 = 5
2) (1/4)^x*(64/25)^x=(5/4)²
(1/4*64/25)^x=(5/4)²
(16/25)^x=(25/16)
x=-1