$\int\frac{a^2}{4a^2+w^2}dw$
$\int\left(1-x\right)^6\left(1+x\right)^2dx$
$\frac{d}{dx}x+xy+y=2$
$5+-10-100$
$\left(a-2b\right)\left(a-2b\right)=0$
$f-2=2$
$\left(-5\right)\cdot\left(-20\right)$
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