$\frac{dy}{y}=abdx$
$\sin^22x=1$
$\frac{r}{10}+4=5$
$\left(x+3\right)\left(x^2-3x+9\right)-27$
$w^2+4w-2=0$
$\sin^2\left(x\right)-\cos^2\left(x\right)=4$
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