$$3 \sinh{\left (x \right )} \cosh^{2}{\left (x \right )}$$
/ 2 2 \
3*\cosh (x) + 2*sinh (x)/*cosh(x)
$$3 \left(2 \sinh^{2}{\left (x \right )} + \cosh^{2}{\left (x \right )}\right) \cosh{\left (x \right )}$$
/ 2 2 \
3*\2*sinh (x) + 7*cosh (x)/*sinh(x)
$$3 \left(2 \sinh^{2}{\left (x \right )} + 7 \cosh^{2}{\left (x \right )}\right) \sinh{\left (x \right )}$$