$49a^6\:-\:70a^3b^4\:+\:25a^8$
$539.28-92.654$
$xy'=3y-6x^2$
$\left(q^2+\frac{1}{p}\right)^5$
$\left(10\cdot100\cdot1000\right)$
$\frac{1}{1+\text{sinb}}+\frac{1}{1-\text{sinb}}$
$a^2\:\left(a+b\right)-2ab\left(a+b\right)+b^2\:\left(a+b\right)$
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