$y'+4y=e^x$
$8a^3-4ab-20a^2+10b^3$
$6\cos^2\left(a\right)-5\cos\left(a\right)+1=0$
$\left(3+x^{10}\right)\frac{dy}{dx}=\frac{x^9}{y}$
$\left(9p^4+2q\right)^3$
$\frac{2x^2-6x+8}{x^2-49}$
$a-5a-35-29$
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