9^(6+3x)=81 6+3х степень

Question

9^(6+3x)=81 6+3х степень

Answer 1

9^(6+3х) = 81^(6+3х)
9^(6+3х) = 9^(2(6+3х))
9^(6+3х) = 9^(12 + 6х)
6 + 3х = 12 + 6х
6 + 3х - 12 - 6х = 0
-6 - 3х = 0
3х = -6
х = -2

Answer 2

Решение задания смотри на фотографии

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