$\:2q\:+\:1-2$
$-2s^2+3s+27$
$6-6-10+8$
$5b+3b$
$1+-1+2+-2+3$
$486+106x+6x^2$
$\frac { \sqrt [ 3 ] { 27 x ^ { 6 } y ^ { 2 } z } } { 3 }$
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