$-1+2+-1+-3$
$\cot\left(a\right)\:\left(tan\:a\:+\:cot\:a\right)\:=\:csc\:a$
$\sin^5x\cos^2x$
$\frac{d}{dx}9x^2+4y^2=36$
$-10:-10$
$sin^{-1}\frac{28.3}{53.1}$
$\int\frac{7x^2}{\left(x^2-1\right)^2}dx$
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