$25 = 7 + v$
$\frac{cotx}{cosx}cscx$
$x^5-27x^3+120x=14x^2$
$3\left(3y+1\right)-7$
$\left(4ab-7c\right)\left(ab+6c\right)$
$\int sec^3\:3x\:dx$
$\int\left(\frac{4}{\left(t+9\right)^4}\right)dt$
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