$\left(-\frac{5}{3}\:bc^2cd\right).\left(\frac{3}{5}a^3bc^2-\frac{1}{6}a^3b^3+c^3\right)$

$\left(a+c\right)^2\:,\:para\:a\:=\:2,c=1$

$\frac{3}{5}x^2y^2+\:-\frac{6}{8}xy^3$

$\frac{2x^2+8x+8}{x+2}$

$\sqrt{32a+\sqrt{8a^2+\sqrt{64a^4}}}$

$x^24x+16$

$\int cos^6\left(3t\right)dt$