$3c\:-\:c\:-\:12c\:+\:20c$
$y''-2y'-35y=0$
$( 1 + y ^ { 2 } ) d x = - x y d y$
$\sqrt{2-2cos\left(4x\right)}$
$\frac{8p-z}{2n}-\frac{12x-m}{z}+\frac{2}{x}$
$y^4+16y^2+64$
$y+\frac{1}{x}y=\sqrt{x}$
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