$\int\frac{3x+4}{x^3-7x+6}dx$
$\left(3x^2+4z^3\right)^2$
$\frac{z^5\:y^6}{z^7\:y}$
$2x^4+2x^2-4$
$x-5>0$
$\frac{81}{x}=-3$
$-10x+-5x+3z$
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