$22\:\cdot\:-3$
$4x^2+x-5$
$\left(-8a^2b-b\right)^2$
$z-1+4$
$2879-579+753-978+897$
$\left(-5+3\right)-1-\left|7-\left(8+12-4\right)-7\right|-35+\left(4+18-15\right)$
$\sqrt{9}-12$
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