$x^2+y^2+z^2-2x+z=0$
$\int^6\left(21x-133\right)\left(x-6\right)dx$
$x^2+11x+56$
$\left(10m+50m^2\right)$
$x^2+3x-28>0$
$3x-5xy+6xy-8x-12xy+4xy$
$5.8\:.\:2.5$
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