$\tan^2\left(y\right)\left(\csc^2\left(y\right)-1\right)=1$
$\left(3x-7y^2\:\right)^2$
$\left(-\frac{1}{4}+h\right)^2$
$36x^4+48x^2-48$
$\frac{\tan\left(x\right)+\cot\left(x\right)}{\sec\left(x\right)+\csc\left(x\right)}$
$\frac{dx}{dy}=5x+y$
$5x-2<10x+8$
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