$\frac{d}{dx}\left(\sin\left(x+2y\right)-\cos\left(2x-y\right)=0\right)$
$4x+3y=18$
$6x^2-11x-10$
$2x^3-4x^2+5=3$
$\left(6x+4y\right)^3$
$-3-\left(-13\right)$
$\int\left(5x-8\right)^3dx$
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