$\frac{1+\sec\left(y\right)}{\tan\left(y\right)}+\frac{\tan\left(y\right)}{1+\sec\left(y\right)}$
$4\left(2m+6\right)+3\left(3+5m\right)$
$\int\cos\left(x\right)\tan\left(x\right)dx$
$4n^2-17n+4$
$4t^3-12t+4$
$x^4+6x^3+3x+140$
$\cos^2a-4=0$
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