$100x^2+10x+4$
$22-4.\left(9+-3.2\right)=10$
$\left(2x^3-6x\:+8\right):\left(x+4\right)$
$-\left(58+233\right)$
$2\log_{10}\left(x\right)=\left(\log_{10}\left(x\right)\right)^2$
$7-2-\left(-19\right)$
$x+xy-4x+4y$
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