$\lim_{x\to0}\left(\frac{\left|4x\right|}{x}\right)$
$\int\sec\left(x+3\right)dx$
$4\left(\sin^2\left(x\right)+\cos^2\left(x\right)\right)=4-3\sin^2\left(2x\right)$
$\lim_{x\to2}\left(\frac{x^4-2x^3}{x-2}\right)$
$\frac { ( 3 ) ( 5 ) ( 8 ) } { ( 3 ) ( 4 ) }$
$\frac{x^2+6x+3}{x+1}$
$5x-4>7x-16$
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