$\left(y+cot\frac{y}{x}\right)dx-xdy=0$
$x^2+10x=-16$
$3y^4-2x^3y+4x^3-5y^4x+3;\:x=-2;y=3$
$-6x-4=\frac{1}{2}x-4$
$\left(a^{x+2}-b^x\right)^3$
$\int^6\left(21x-133\right)\left(x-6\right)dx$
$\int\left(x^2-2\right)^3dx$
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