$\cos\left(-360\right)+\tan\left(720\right)$
$\left(2y\right)\left(2y+1\right)$
$-10\left(25\right)$
$2+\left(5+y\right)$
$x^2+\:2x+1>0$
$8\left(4y-2\right)$
$\frac{\sin\left(2a\right)}{\cos\left(a\right)}$
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