$-164\:=\:-4\left(-4n\:+\:8\right)\:+\:6n$
$-23\cos x+20=0$
$\csc^4x-\csc^2x$
$\frac{1}{cos^2x}-\frac{1}{cot^2x}$
$-.03x^2+.75x+1.5125$
$\int\left(\frac{240}{x+x^2}\right)dt$
$\left(-6a^3-y^2\right)^2$
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