$-2x-9y=-10$
$\int4\left(3x-2\right)^2dx$
$57,456-4,2$
$\left(-2x+4\right)^2\left(-2x-4\right)$
$\frac{dx}{dy}+2y=0$
$\frac{d}{dx}\left(\left(x+y\right)^3+\left(x-y\right)^3=x^4+y^4\right)$
$\frac{1}{-\tan x-\cot x}$
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