$259+49-w$
$9y^2-9x^2$
$5x-1+4x-1$
$10x^5-7x^4-104x^3+66x^2+126x-27$
$\frac{9.2}{1}\cdot1.5$
$\int\frac{-1}{3}x^3e^{5-\frac{1}{2}x}dx$
$\frac{1}{2}\:\left(-1.4m\:+\:0.4\right)$
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