$-\left(-4-5\right)-7+8-3+4$
$\int x^2\:\cot\left(x^3\right)\csc\left(x^3\right)\:dx$
$0,32+1,4-7,2+8,9$
$\frac{64}{25}x^2y^8-16z^4$
$-9\:+\:-70\:+\:-4\:+\:4\:+\:12$
$4y^2-81$
$\int\left(x^2-1\right)\sqrt{2x+1}dx$
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