Algebra & Equations
Sum of Quadratic Roots
Sum of roots via Vieta's formulas.
Formula
Formula
x1 + x2 = −ba
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| a | quadratic coefficient | real number (ℝ) | — | input |
| b | linear coefficient | real number (ℝ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givena = 2, b = -6
Result3
Example 2
Givena = 1, b = 5
Result-5