$3x\:-\:6\:>\:3\left(\:x\:-\:2\right)$
$\left(-1\right)^5\:-\:\left(-2\right)^4$
$\left|-40\right|$
$16a^2+4a+4$
$x^3-3x\cdot2x^2+3x+5$
$-6\cdot2-10$
$15x\cdot15x$
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