$\lim_{x\to\infty}\left(5x\left(\frac{1}{2}\right)^x\right)$
$\frac{\left(\tan\left(x\right)+\cot\left(x\right)\right)^2}{\sec^2x+\csc^2x}$
$2300+-1500$
$87=x+87$
$\int\left(\frac{a}{x^2}\right)dx$
$-\frac{40}{5}$
$3x+15m+10x-2m$
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