$\sin\left(30\right)^2+\cos\left(30\right)^2$
$\frac{1}{2\csc2x}=\cos^2\left(x\right)\tan\left(x\right)$
$2xy\:+\:x^3y$
$1-4\cos\left(x\right)^2$
$36v^2+84vu+49u^2$
$3^{-1}\cdot3^6$
$\left(9-6x^3\right)$
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