SOLUTION: what is 3^-x = x^3 + x

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Question 1067775: what is 3^-x = x^3 + x
Found 2 solutions by Edwin McCravy, rothauserc:
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
what is 3^-x = x^3 + x
There is no algebraic method for solving an equation in which
a variable appears in an exponent and also in a base of an
exponent.

Such equations can only be solved by some iterative process or
by using technology (which uses iterative processes):

Answer: 0.4798223224 

Edwin
Answer by rothauserc(4718)   (Show Source): You can put this solution on YOUR website!
3^-x = x^3 + x
:
graph 3^(-x), the red line, and x^3+x. green line - where they intersect is solution for x
:

:
x is approximately 0.48
:
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