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).

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