$\left(\frac{7}{4}x-5\right)\:\left(\frac{7}{4}x-1\right)$
$\sin^2\left(x\right)-\cos^4\left(x\right)\cdot\sin^2\left(x\right)$
$y^2+16w^2-8wy$
$\sin\left(2a\right)-\tan\left(a\right)=\tan\left(a\right)\cos\left(2a\right)$
$\frac{12}{0}$
$18a^2\:-\:12ab\:+\:8b^2$
$\frac{dy}{dx}=e^{-x}-3\cdot y$
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