$-4xe3ye2z$
$\:2^2-234+4^2$
$-2x^2+5x\ge12$
$\sqrt{8x^2yz\sqrt{yzw\sqrt{2zw^3}}}$
$x^2+4x-8y+4=0$
$\sec\left(x\right)\left(1-\sin^2\left(x\right)\right)=\tan\left(x\right)$
$a^2\left(a^2+3-a\right)$
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