$100\cdot\left(-9\right)$
$98\cdot2$
$\lim_{x\to0}\left(\frac{2cos\left(2x\right)sin\left(2x\right)}{2x}\right)$
$\frac{d}{dx}xseny\:-cosy\:+cos^2y=0$
$\frac{4}{9}x^2-\frac{2}{3}xy+\frac{1}{4}y^2$
$64w^2-48w+9$
$9n^2\:-\:6np\:+\:p^2$
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