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x^2log343(5-x)
A inequation with variable

The solution

                   / 2            \
 2 log(5 - x)   log\x  - 10*x + 25/
x *---------- < -------------------
    log(343)           log(7)      
$$x^{2} \frac{\log{\left(5 - x \right)}}{\log{\left(343 \right)}} < \frac{\log{\left(\left(x^{2} - 10 x\right) + 25 \right)}}{\log{\left(7 \right)}}$$
x^2*(log(5 - x)/log(343)) < log(x^2 - 10*x + 25)/log(7)

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