I don't really know what this thing that I am doing is called, hence the reason I am asking here and not googling. I have a formula $0.5x(x + 1) = y$. And I am trying to convert it to a function which provides the x value based on the y value. I have the following function at the moment $x = (y / 0.5)/x - 1$. What do I have to do to remove the x variable on the right-hand side? Can you also tell me what this thing that I am doing is called so I'll have easier time googling.
2026-03-25 09:32:30.1774431150
Trying to switch the formula
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