$x^2+5x-6\le0$
$x^5+6x^4+9x^3\:-x^2-6x-9$
$\int\left(e^x\sqrt{6+7e^x}\right)dx$
$cos^4x\:csc^2x$
$\frac{9x^6+y^3-6x^4y^2}{4x^2}$
$\left(sin\left(x\right)\cdot\:sec\left(x\right)-sin\left(x\right)\right)^2+\left(1-\frac{1}{sec\left(x\right)}\right)^2$
$2a^2b+6ab^2$
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