$\frac{\left(\frac{x}{y}+1\right)\left(\frac{x}{y}-1\right)}{\frac{x}{y}-\frac{y}{x}}$
$\int\:\frac{\sqrt{3}}{25-9x^2}dx$
$6x^{-1}$
$\frac{1-e^{-5s}}{s^2\left(s^2+16\right)}$
$\left(x+2y+4\right)^3$
$-\frac{120}{-10}$
$\left(\cos\left(x\right)\right)\left(\cos\left(x\right)-\tan\left(x\right)\sin\left(x\right)\right)=\cos\left(x\right)^2$
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