$\left(2e^{i\left(\frac{\pi\:}{4}\right)}\right)^2$
$4-\cot^{2}a$
$10=\frac{w}{3}$
$\left(xa-2a\right)^3$
$\lim_{x\to39}\left(\frac{cos\left(xt\right)-\cos\left(39t\right)}{1521-x^2}\right)$
$\frac { 3 x ^ { 7 } y ^ { 4 } } { 9 x ^ { 2 } y }$
$\frac{1-\frac{\sin\:\left(x\right)}{\cos\:\left(x\right)}}{-1+\frac{\cos\:\left(x\right)}{\sin\:\left(x\right)}}$
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