SOLUTION: if a & b are roots of a quadratic equation, please explain the expansion processes a^2+b^2 = a^2+2ab+b^2-2ab. thank you.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: if a & b are roots of a quadratic equation, please explain the expansion processes a^2+b^2 = a^2+2ab+b^2-2ab. thank you.      Log On