$14-12+14+1-9-1$
$25n^2-10nz+z^2$
$-3d\:-\:2d\:+\:7d\:-\:5d$
$\left(x^2y+x^2-y-1\right)dx=xydy$
$w^2-10w-11$
$12x^2-9x=0$
$\sqrt{x+4}+5=12$
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