$\frac{x^{-3}y^{-3}}{x^3y^{-3}}$
$5^2+3^2\cdot4$
$\frac{dx}{dy}=-2yx$
$\int_0^{\infty}\left(\frac{1}{1+x^2}-\frac{2}{3x+1}\right)dx$
$\left(1+d\right)^3$
$2,9+2991,199$
$8cos^2x+16cosx+8$
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