$\frac{10x^2+2x-2}{x-3}$
$8xy-2x$
$x^2\:+7\:x\:+12\:=\:0$
$\frac{1}{3}\sec^3\:2t-\sec2t$
$6x^4-9x^3+3x^2$
$x^2+10x+50=0$
$-2\cdot\left(-5+1-7-9\right)$
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