> I have trouble understanding why this deserves a paper. This is what I learned in middle school back in Vietnam (although I did take advanced Math). > [...]

> I have trouble understanding why this deserves a paper. This is what I learned in middle school back in Vietnam (although I did take advanced Math). > [...] > It's known to middle school students in Asia that multiplying the original equation so that A == 1 would greatly simplify the roots formula. I think the same having attended a regular grammar school in Germany.