$\left(-2\right)^{12}$
$3ab\left(a+b\right)+3\left(a+b\right)^2c+3\left(a+b\right)c^2$
$\left(i^2-2i+1\right)+\left(i^3+3i^2+3i+1\right)$
$0.5\cdot2730\cdot25.27^2$
$x-2>3$
$-6r^4t^2+9r^8+t^4$
$2x^2+2x-24$
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