$\int\frac{1}{x^2+8x+20}dx$
$\int3x\sqrt[3]{2-2x}dx$
$\frac{cotx}{1+cscx}+\frac{1+cscx}{cotx}$
$3^{3x-4}=\frac{1}{81}$
$2x-40>50x+16$
$22+\left(-24\right)-\left(-5\right)-25$
$-7x^2+4x^2$
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