$x^2-3xy+10x^2$
$-3x^2+6x-2$
$sinx=\frac{tanx}{secx}$
$2x^2+10x-12=0$
$x2\:+\:44x$
$\lim_{x\to0}\left(\frac{\left(lnx\right)^2}{x-1}\right)$
$-142+-327$
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