$7\left(x+5\right)<-3\left(x-13\right)+1$
$\frac{d^2y}{dx^2}\left(x^3+3x^2y-6xy^2+2y^3\right)$
$xy+y=6$
$18x^2-45x-8$
$5x^2\:-7x+10=0\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:$
$-1-\sqrt{3}i$
$x^2-1>3$
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