Just out of curiosity, why would you want to copy/paste an equation into the Google search bar? Can it solve it?
i.e. this worked in the Google search bar "solve 1x^2 - 2x - 3 = 0" this didn't "Integrate e^x from 0 to 1"
Wolfram Alpha did a pretty decent job with the same text string. https://www.wolframalpha.com/input/?i=Integrate+e%5Ex+from+0...
Looks like you have to go Pro to see the steps though, which is fair enough.
Just out of curiosity, why would you want to copy/paste an equation into the Google search bar? Can it solve it?