$49\cdot7$
$\left(3y\right)\frac{dy}{dx}=w^2$
$n^2\:x\:n^4\:x\:n^5$
$9f\:+\:2f$
$\int\ln^2wdw$
$\frac{dy^2}{dx^2}-4x=1$
$2a+5a$
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