$cot\left(a\right)-cot\left(b\right)$
$\left(\sqrt[3]{\frac{-8x^6}{y-8}}\right)^2\left(\sqrt[5]{\frac{x^3y^{-10}}{32x^8}}\right)^3$
$\left(\frac{3}{5}a^2+\frac{1}{3}ab-\frac{1}{2}b^2\right)\left(\frac{3}{2}a^2+2b^2-ab\right)$
$-92-\left(-9\right)$
$3,9+4,5+5+4$
$cmamo$
$9xy+8x-8y+6xy$
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