Simplify call significantly slower for "x^(-6)+1" than for "x^(-6)"

[conipoi]

I'm looking into integrating Algebrite into my javascript web app for comparing math expressions that a user inputs in a text field with the correct solutions.

While testing I'm experiencing that sometimes Algebrite.simplify slows down significantly even though I'm just adding a "+1".

Calling Algebrite.simplify("x^(-6)+1") takes ~15-24sec to calculate while Algebrite.simplify("x^(-6)") takes roughly 20ms.

Can you fix this issue or at least explain why this is happening?

When running this on your demo website or in the console, I'm getting results almost instantly. I'm using a minified version of the algebrite.bundle-for-browser.js.

Thanks in advance!

[davidedc]

probably trying to factor it. TBC. leaving this open for further checks.

[conipoi]

Thanks for the quick reply! But that should still affect both the speed in the console and the browser? How come it's so different?

[davidedc]

if that's the reason, then yes one expression is much easier to factor than the other see https://www.wolframalpha.com/input/?i=factor%28x%5E%28-6%29%29 vs https://www.wolframalpha.com/input/?i=factor%28x%5E%28-6%29%2B1%29 so that would explain it