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