Solving the Exponential Equation: (25)^x-1 = 64(5/2)^6
This article will guide you through solving the exponential equation (25)^x-1 = 64(5/2)^6. We will utilize the properties of exponents and logarithms to arrive at the solution.
Simplifying the Equation
- Express both sides with the same base:
- We can rewrite 25 as 5^2 and 64 as 2^6.
- The equation now becomes: (5^2)^(x-1) = 2^6 (5/2)^6.
- Apply exponent rules:
- (a^m)^n = a^(m*n)
- The equation becomes: 5^(2x-2) = 2^6 * 5^6 / 2^6
- Simplify further:
- The 2^6 terms cancel out, leaving: 5^(2x-2) = 5^6
Solving for x
- Equate the exponents:
- Since the bases are the same, we can equate the exponents: 2x - 2 = 6.
- Solve the linear equation:
- Add 2 to both sides: 2x = 8.
- Divide both sides by 2: x = 4.
Conclusion
Therefore, the solution to the exponential equation (25)^x-1 = 64(5/2)^6 is x = 4.