$\sin2=\cos\left(60\right)$
$\left(2-\sin\left(x\right)\right)\left(-\sin\left(x\right)\right)$
$-5+6-7+9-\left(-7\right)$
$\log\left(8\right)+3\log\left(x\right)=3$
$m\left(2m-1\right)=3$
$\lim_{xy\to1,1}\left(\frac{xy-1}{1-xy}\right)$
$\left(2i-3n\right)^2$
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