$4x^2+2x^2+1$
$v+v+v$
$\left(5p-3q\right)\left(5p-13q\right)$
$\left(u+2\right)\left(u-7\right)$
$1.89\cdot12.61$
$\frac{108a^7b^8c^4}{-20b^6c^8}$
$\int\left(\sqrt[3]{b+9}\right)db$
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