$7x-11<2x+160$
$\frac{9x^2-3}{3\sqrt{x}-2}$
$3x^2-6x^2-2$
$\left(1+\sin\left(a\right)\right)\left(1+\sin\left(a\right)\right)=\frac{1}{\sec^2\left(a\right)}$
$\int\:\:x^5\sqrt{1-x^3}dx$
$\frac{dy}{dx}\left(x^2y^3+y^4+x^4=5\right)$
$1-\frac{senx}{cosx}$
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