Mathematica无法使用系数求解系统

我试图求解一个给定输入值的方程,这样mathematica就可以处理一个答案并产生一个结果。但是,当我尝试这样做时,它不喜欢我给出的方程式:

Solve[(Exp[2 h] - 1 - 2 h)/(5 h^2) == 0.1, h]

Solve was unable to solve the system with inexact coefficients or the system obtained by direct rationalization of inexact numbers present in the system. Since many of the methods used by Solve require exact input, providing Solve with an exact version of the system may help.

Solve[(-1 + E^(2 h) - 2 h)/(5 h^2) == 0.1, h]

如果未能提供解决方案,则错误 “求解::不精确” 显示,显示上面的文本。我不确定我是否必须对输入参数更加明确。我正试图将h设置为0.1(以及其他值,如002,-0:0001,-0:00002),并获取一个十进制值。使用 解 也不会产生结果。