## Homework Hints 6-2

[tippy title=”Problem 1″]Problem 1
Look for a common factor, then look to see if it is a difference of squares, and finally check to see if it is a trinomial.[/tippy]

[tippy title=”Problem 2″]Problem 2
A difference of squares has the … See the whole entry

## Individual Research Projects Section 6.4

### Project 6.2

Write out a derivation of the quadratic formula.

References:
You can check almost any high school algebra book.

### Project 6.3

Find any replacements for x, y, and z such that xn + yn  = zn, … See the whole entry

Video:
Evaluate an expression  (time: 7:51)

Videos:
Adding and Subtracting Polynomials (time: 7:47)

Multiplying Polynomials (time: 1:53)

Binomial Theorem (time: 9:40)

Using areas to multiply polynomials (time: 9:40)
See the whole entry

## Reference Topics 6-2

Here is some practice factoring trinomials using FOIL.
http://www.mathwizz.com/algebra/help/help3.htm

Here is some practice factoring difference of squares:
http://www.purplemath.com/modules/specfact.htm

This excellent Khan Academy site give extra practice in factoring: