Expand these expressions


$\displaystyle \left(\vphantom{ 3x^{2}+3x}\right.$3x2 + 3x$\displaystyle \left.\vphantom{ 3x^{2}+3x}\right)^{{3}}_{}$ $\displaystyle \left(\vphantom{ x+y}\right.$x + y$\displaystyle \left.\vphantom{ x+y}\right)^{{4}}_{}$ sin$\displaystyle \left(\vphantom{ x+y}\right.$x + y$\displaystyle \left.\vphantom{ x+y}\right)$ $\displaystyle \left(\vphantom{ 3x^{2}+3x}\right.$3x2 + 3x$\displaystyle \left.\vphantom{
3x^{2}+3x}\right)$$\displaystyle \left(\vphantom{ 8x^{2}+7}\right.$8x2 + 7$\displaystyle \left.\vphantom{ 8x^{2}+7}\right)$