$x\sqrt{4-y^2}dx+\sqrt{x^2+3}dy=0$
$\left(\frac{5}{2}x^2-4\right)\left(\frac{5}{2}x^2+4\right)$
$\frac{a^8}{a^{-6}}$
$\frac{2}{3}x^{-2}-\frac{1}{10}b^{m-2}+\frac{1}{2}x^{m-2}-\frac{3}{4}b^{m-2}-4x^{m-2}$
$4x+6x+7x+2x-x$
$\int\left(x+\sqrt{x^2+6}\right)^2dx$
$\left(\left(a+b\right)^2+c\right)^2$
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