2*x*cosh(2*x) + sinh(2*x)
$$2 x \cosh{\left(2 x \right)} + \sinh{\left(2 x \right)}$$
4*(x*sinh(2*x) + cosh(2*x))
$$4 \left(x \sinh{\left(2 x \right)} + \cosh{\left(2 x \right)}\right)$$
4*(3*sinh(2*x) + 2*x*cosh(2*x))
$$4 \left(2 x \cosh{\left(2 x \right)} + 3 \sinh{\left(2 x \right)}\right)$$