$-\left(x+4\right)+\frac{x}{3}=-\frac{8x}{3}$
$93.65+2.7$
$0.02^6$
$-1+19-27+56-17-2$
$\int\left(x^2+4\right)e^{4x}dx$
$\csc^210a-\cot^210a$
$\left(1-\cos\left(a\right)\right)\left(1+\cot\left(a\right)^2\right)=1$
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