$\frac{u}{20u+8}.\left(20u+8\right)$
$\left(4x^5\right)^3\cdot3x^7$
$\lim_{x\to\infty}\left(e^x+2x\right)^{\frac{1}{x}}$
$\left(5x^2y+\frac{1}{3}x^3y^2\right)^2$
$\frac{5}{5-y}-\frac{y^2}{5-y}=-2$
$2\sin^2\left(60\right)-5\sin\left(60\right)=-2$
$16cosxcos2x$
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