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= 5^ 2(x-2) = 1
= 5^ 2x - 4 = 5^0
= 2x-4 = 0
= 2x = 4
= 2x = 4
= x = 4/2
= x = 2
2) -3^2x-1 = -1/81
= 3^ -1(2x-1) = -(81^-1)
= 3^-2x + 1 = -(3^(4×)(-1))
= 3^-2x + 1 = -(3^-4)
= 3^-2x+1 = 3^(-4)(-1)
= 3^-2x+1 = 3^4
= -2x + 1 = 4
= -2x = 4-1
= -2x = 3
= x = 3/2
selesai :)
Semoga membantu :)
dan bisa dijadikan jawaban tercerdas :)