$x^2+5=149$
$\frac{900}{\left(x+4\right)^2}-1$
$\left(y^2-y\right)dx+xydy=0$
$\lim_{x\to\infty}\left(\sqrt{n^2+3n}-n\right)$
$\frac{2x-7}{4x+8}-3\le0$
$\left(-u^4w^9x\right)^2$
$-2\:x\:3\:x\:\left(-4\right)\:x\:\left(5\right)$
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