$\int\left(\sqrt{x^2+y^2}\right)dx$
$\left(x^{a-1}-3^{a-2}\right)^2$
$2a\:\left(a^2\:+\:b^2\right)$
$\left(8\cdot w+2\cdot u\right)^2$
$-2x\ge x-8$
$1+\sec^2=3\tan^2$
$x3-x^2-4x+4$
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