Raymond B. answered • 05/24/21
Tutor
5
(2)
Math, microeconomics or criminal justice
(3)^(x-1) + (3)^-x = 4
(3)^(x-1+x) = 4
(3)^(2x-1) = 4
2x-1 = about 1.26 3^1.26 = 4
2x = 2.26
x = 1.13
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