$\frac{dy}{dx}=9x^3y$
$\lim_{x\to2}\:3x^4+5x^3-7x^2+4x-10$
$4x^2+12x-8$
$-12+3+45+99-2$
$\cos^2\left(x\right)+\sin\left(x\right)=\sin^2\left(x\right)$
$-22a=418$
$\frac{2x^2-23x+66}{2x^2+x+1}$
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