$\int\:\frac{5+x}{2x^2+x-1}dx$
$2\sin\left(x\right)^2-3\sin\left(x\right)+1$
$\int\left(\left(1+x^3\right)^2\right)dx$
$4x+3=7x-6$
$sin2x\:-\:2cosx^2\:=\:0$
$\frac{1}{1-\sin^2\left(a\right)}=1$
$\frac{36s^4}{5r^2}-\frac{54s^3r^2}{9y}-6s^3r^3$
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