Well, not really. I mean that’s a start but it’s not formatted as a math expression. i.e. with powers as superscript, with square root symbols, quotients as numerator and denominator. As in the picture I supplied.
I bet it wouldn’t be too hard to convert the expression to MathML or latex and show it like that? Right? I mean its supposed to be visual programming and math expressions have a lot of visual ways of making them easier to read.
In your example it should (optionally) be shown in the node as:
At a glance that’s quicker to interpret than all the brackets on one line. Just type sin(2x+(y-2)/5) into Wolfram Alpha, for example, to see what I mean. The idea of nodes is to get away from code so this is a way to show formula in a human readable instead of machine readable way. (I know many will say, it’s perfectly understandable as it is, but remember that its supposed to be understandable by a layman who might have GCSE math but not programming language skills and might not understand that "" means times).