Solve 8^x+13^x=108: Step-by-Step Algebraic Guide

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The equation 8^x + 13^x = 108 cannot be solved algebraically, as it does not yield to logarithmic methods or other traditional algebraic techniques. The only way to find a solution is through numerical approximation, with the approximate value of x being 1.68279. The Newton-Raphson method is suggested as a viable numerical approach for finding this approximation. Overall, it is emphasized that most transcendental equations, like this one, lack exact solutions. Therefore, numerical methods are the only practical means to solve such equations.
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Help me solve for x in detail please:

8^x+13^x=108

Simply done graphically, but algebraically?
 
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It can't be solved with logs or anything like that.
 
I figured as much after working with it for a while, but I thought I might have just been missing something. How does one solve it then?
 
You can only approximate the solution, which is:

x \approx 1.682790571570192534987737142973064792462
 
I think you can't do it,without a calculator.Maple returns \left\{ x=1.\,68279\,0572\right\},but it can't be solved algebraically.In fact,most transcendental equations can't be solved.

Daniel.
 
you can solve it by using Newton-raphson method
 
quentinchin said:
you can solve it by using Newton-raphson method

Only approximate, not an exact solution. There is no exact solution method.
 

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