this post was submitted on 10 Jun 2024
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I'm on kcalc 22.12.3, so maybe something changed. If I click the negative sign after clicking the 8, it works for me. So workflow in science mode: 5 x 10 Xy 8 +/- Enter.
And after typing all this I realize you probably meant using the keyboard. If so, use Backslash after typing the exponent to make it negative.
Thanks. That and megane-kun's solutions work, now that I know about the backslash key.
BTW, IDK about Kcalc 22, but Kcalc 23 rocks because they added history to it. If you type Ctrl+h, it opens a panel that shows all the past results since the last AC. That's why I'm using the flatpak to get it. It makes the calculator much easier to use and when I get ridiculous results, it shows me what I actually typed instead of what I meant to type.