$n-6n+15n^2$
$7\left(x-3\right)=9\left(x+1\right)-38$
$\frac{1}{3x^2}+2x^3+\frac{2}{\sqrt{x}}$
$10x^2+x-3=0$
$\log_x\left(\frac{9}{\sqrt{3}}\right)=\frac{3}{2}$
$-14\left(4+11s\right)$
$\left(x-2\right)^{2}-\left(x+3\right)^{2}\leq1-x$
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