
Quadratic RELATIONS

Multiplying Binomials and Special Products
Part 1: Multiplying Binomials
Multiplying binomials is a huge concept in the unit of factoring. If you do not know what a binomial is, its a polynomial that has two terms.
For example: a + 4 or 2 - f
Now lets try examples:
1) x(x+3) 2) 3(x+5) Challenge: (x+4)(x+5)
= x2 + 3x = 3x + 15 = x2+5x+4x+20
= x2+ 9x+20
Part 2: Expanding Special Products
This may seem hard, but if you follow along with the video and the examples it will become much simple.
Example 1: (5x-2)(x+4) Example 2: (2x+5)2
= 5x2+ 20x-2x-8 = (2x+5)(2x+5)
=5x2+18x-8 = 4x2+10x+10x+25
= 4x2+20x+25
Now try these on your own!
1) (4x+5)2 2) (6x+7)2
3) (7x+10)2 4) (3x+8)2
*Challenge Question*
5) 6(3x-2)(2x-3)-2(4x-3)(2x-5)
Answers:

Video: Multiplying Binomials and Special Products