$2\frac{m}{2}-7$
$80^2-20^2$
$\lim_{x\to0}\left(\frac{5sin\left(x\right)cos\left(x\right)-sin\left(x\right)}{x}\right)$
$6x-\left(7x^2+2x-9\right)+12=\left(6x^2+3\right)$
$\sin\left(60\right)=\frac{10}{x}$
$a^b\cdot a^6$
$x^2-14x+99$
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