Algebra Resources for Students and Teachers

Factoring

• The Lizzie Method
  An alternative way of approaching factoring quadratics in the form ax²+bx+c.
• 210 Factorable Quadratic Polynomials (PDF)
  A complete list (in random order) of all the quadratic polynomials in the form x²+bx+c with factors (x+p)(x+q) where p and q are in the range 1 to 10 or -1 to -10.
• 410 More Factorable Quadratic Polynomials (PDF)
  An extension of the above list to include zeros in the range 11 to 20 (and -11 to -20). There is no overlap between the two lists.

Quadratic Formula

• IRS Form QF
  The quadratic formula presented in the format of an IRS tax form. From Daniel J. Velleman (author of How to Prove It).

Last updated 26 Feb 2006.   Send me an e-mail.