$\left(\sqrt[3]{x}\right)^3-\left(\sqrt[3]{y}\right)^3$

$\left(3^{15}\cdot3\right)$

$53\:-\:\left\{6-\left[\left(32-15+8\right)-22\right]-7\right\}$

$\left(\sqrt[2]{x+2}-2\right).\left(\sqrt[2]{x+2}+2\right)$

$\left(\frac{3}{5}x^{\frac{1}{3}}y^3z^{\frac{1}{4}}\right)\left(-\frac{1}{5}x^{\frac{1}{2}}y^{\frac{3}{4}}z^{\frac{1}{2}}\right)$

$4y^2x^2+36xy^3+81y^4$

$5=-1+2a$