The Quadratic Formula

The quadratic formula helps you solve quadratic equations, and is probably one of the top five formulas in math.  We’re not big fans of you memorizing formulas, but this one is useful (and we think you should learn how to derive it as well as use it, but that’s for the second video!).
If you have a general quadratic equation like this:

ax^2+bx+c=0ax2+bx+c=0a, x, squared, plus, b, x, plus, c, equals, 0

Then the formula will help you find the roots of a quadratic equation, i.e. the values of xxx where this equation is solved.

The Quadratic Formula

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}  or?   ? x= (-b +- Sqrt(b^2) – 4ac) / 2a

…and Math Tutoring offers math tutoring in the north county of San Diego (Oceanside, Vista, Carlsbad, San Marcos…) and EVERYWHERE online. Call us at 818-970-4800 or CLICK HERE.

About Stuart Raffeld

B. A. Operations Research & Statistics, California State University, Long Beach, Teaching Assistant undergraduate Mathematics. B.S. Mathematics, California State University, Long Beach. Mathematics University of California, Irvine, Teaching Assistant undergraduate Mathematics. Completed course work for MS Degree with 4.0 GPA. M.S. Mathematics, Kingsbridge University. Transcript available upon request. 1988-Present: Mathematics tutoring--One on one tutoring for SES students through YP institute and Academic advantage. Tutored students with low learning skills as well as very bright students. Tutored groups of four students in math classes from basic mathematics through calculus. Mathematics teaching for EFN, Inc., a private school.