$200.6-80$
$-2+10-3+7-9-1-2+9$
$\lim_{x\to4}\left(\frac{\tan\left(9x\left(x-4\right)\right)}{x-4}\right)$
$27\:-\:\left[3\:-\:\left(12\:+\:9\right)\right]$
$9x^2-36x-4$
$\frac{169}{196}w^2-\frac{65}{7}w+25$
$13=-4k+9$
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