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258*5^x-25*2^x=100 equation

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Numerical solution:

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The solution

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     x       x      
258*5  - 25*2  = 100
$$- 25 \cdot 2^{x} + 258 \cdot 5^{x} = 100$$
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Numerical answer [src]
x1 = -0.486903773375897
x1 = -0.486903773375897