$\left(9m-4n\right)^3$
$4x^3\cdot\left(-12\right)x^5$
$\left(2a-b\right)\left(3a+b\right)$
$y^{-3}w^0$
$\frac{cos32^{\circ\:}\:\:\cdot\:\:cos28^{\circ\:}\:\:-cos302^{\circ\:}\:\:\cdot\:\:sin152^{\circ\:}\:\:}{sin34^{\circ\:}\cdot\:\:sin146^{\circ\:}+sin236^{\circ\:}\cdot\:\:sin304^{\circ\:}}$
$2cosx^2-2cosx-1=0$
$\left(4y^7-3y^8\right)^3$
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