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Popular >

3^{2x-1}=81

Solution

3^{2 x - 1} = 81

Solution

x = \frac{5}{2}

+1

Decimal Notation

x = 2.5

Solution steps

3^{2 x - 1} = 81

Apply exponent rules

2 x - 1 = 4

Solve

2 x - 1 = 4 : x = \frac{5}{2}

x = \frac{5}{2}

Popular Examples

128=(5^{2n-5})/(2^{4n)}

128 = \frac{5 ^{2 n - 5}}{2 ^{4 n}}

2^{x} = 36

7^{3 x - 2} = 2401

5(2^{x+1})-4^x=16

5 (2^{x + 1}) - 4^{x} = 16

49^{x+3}=7^{x^2-3x-8}

4 9^{x + 3} = 7^{x^{2} - 3 x - 8}

Frequently Asked Questions (FAQ)

What is the answer to 3^{2x-1}=81 ?
The answer to 3^{2x-1}=81 is x= 5/2
Solve for x: 3^{2x-1}=81
The solution is x= 5/2