$2x^2-20x+48$
$x+2-14-x$
$2\sin^2\left(30\right)+3\sin\left(30\right)+5$
$8cos5xsec3x$
$\left(2x-y+3\right)^2$
$\sqrt{36x}$
$3\left(a-12\right)=15$
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