The Quadratic Formula
Use the Formula
There are actually quite a few ways to solve quadratic equations (and you'll learn at least three in your college algebra classes), but for most GED students, just learning the quadratic formula is enough. It always works, plus the formula is on the GED formula sheet.
The quadratic formula can be used to find x when a quadratic equation is in standard form.
Watch the Virtual GED Class video below for a complete explanation and tons of worked example problems.
Ease into the quadratic formula with straight-forward examples in standard form with rational solutions.
Start with standard form and rational solutions and work your way up to irrational solutions with this worksheet.
Calc for Quadratics