Saturday, January 3, 2009

Polynomials Episode 10: Difference of Squares - 5:26



KEY CONCEPT:

(a-b)(a+b) = a^2-b^2

Since the middle terms equals zero, of the FOIL method all we need to do it the First and the Last.

**NOTE:
we subtract the first squared value with the second.

No comments:

Post a Comment