$6x^2-54x+24=0$
$\left(\left(2\right)\left(6\right)\left(9\right)\left(7\right)\left(\frac{2}{3}\right)\left(\frac{1}{2}\right)\right)$
$\tan2=\cot\left(-480\right)$
$\frac{x+5}{x^2+x-2}$
$-5x^2+9x+6$
$3a+\left(b+1\right)\left(3a+1\right)$
$cos\:\left(2\theta\:\:-\:10^\circ\:\right)\:=\:-0.6$
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