i try to eliminate truncation error with subtraction in calculating root of function where$$x_1=\frac{-b-\sqrt{b^2-4c}}{2},\quad b<0,\quad 0<c\ll 1.$$Does someone have an idea of how to change the formula to eliminate truncation error?
2026-02-23 08:28:37.1771835317
Truncation error - subtraction
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