$\frac{1}{n}-\frac{1}{n+1}$
$\int\left(5x^4-4x^3-2x+3x^2-7\right)dx$
$y^2+4y+5$
$\lim_{h\to7}\frac{x+8}{x-7}$
$\sec\left(x\right)-\cos\left(x\right)=\frac{\left(\tan\left(x\right)\right)^2}{\sec\left(x\right)}$
$\left(x-3\right)\left(x+45\right)$
$-\left(10-26+13\right)-\left(-32+56-24\right)+16$
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