$\int\frac{2}{\left(x+1\right)\left(x^2+2\right)}dx$
$\frac{10}{5x^2-2x^3}$
$x^2+9x=112$
$2x^2-20x+50=0$
$\left(m+4\right)\left(m+3\right)+\left(m-4\right)\left(m-5\right)-2m\left(m-1\right)$
$\sqrt{3}\sec\left(\frac{1}{2}x\right)=2$
$74-5$
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