$\left(\sec\left(y\right)-1\right)\cos^2\left(y\right)=\sin^2\left(y\right)$
$-2^2^2^2^2^2$
$5n-2-3n+7$
$x-y=5$
$5ab-15bc$
$\left(6\right)\left(-8\right)\left(-2\right)$
$\int\frac{x+3}{\left(x-4\right)^2}dx$
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