Algebra & Equations

Sum of Quadratic Roots

Sum of roots via Vieta's formulas.

Formula

Formula
x1 + x2 = −ba

Variables

SymbolDefinitionType & rangeUnitsRole
a quadratic coefficient real number (ℝ) input
b linear coefficient real number (ℝ) input

Try it yourself

Interactive calculator
Result

Worked examples

Example 1
Givena = 2, b = -6
Result3
Example 2
Givena = 1, b = 5
Result-5