$cscx-\frac{sinx}{1+cosx}=cotx$
$-61-\left(-1\right)$
$\left(\frac{4}{5}a+\frac{2}{3}b\right)\left(\frac{4}{5}a-\frac{2}{3}b\right)$
$0.005163193046487591^2$
$4x^2-12x+9x$
$\left(xy\:+\:3x\:+\:2\right)\:+\:\left(3^2\:+\:y\right)$
$\frac{\left(1-x^2\right)}{\left(+1\right)}$
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