$9a^4-6a^2\:x+3a^3\:x^2$
$3\left(x-1\right)-2\left(x+2\right)<5$
$\int\left(sec^2x-1\right)sec\left(x\right)\:tan\left(x\right)dx$
$\frac{882}{841}=1-\cos\left(a\right)$
$\left(2\:n\:m\:7\right)^2$
$4ax-9b+3a-12bx$
$3xy^2+5y-y^3=0$
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