Question

9^(2+5х)=1,8*5^(2+5х)

Answer 1

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Answer 2

9^(5x + 2) = 9/5 * 5^(5x + 2)
(9/5)^(5x + 2) = 9/5
5x + 2 = 1
5x = - 1 
x = - 0.2 

Answer 3

спасибо большое