$4d\:3\:-\:22d\:+\:17b\:-\:9b\:+\:17d\:3\:-\:11d$
$\int2x\sqrt{2x^2+16x+31}dx$
$2x^2-11x=87$
$45-60+10-42+21$
$-x^2-5x+24$
$x^5-40x^4$
$\frac{8}{3}.\frac{6}{16}$
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