Algebra: Chapter 1-5
Distributive Property of Mutiplication over Addition
Quiz #1 Today. Class averages: period 1=83%, period 2=88%, period 7=83%. Good results for a start!
The distributive property of mulitplication over addition is written as `a(b+c)=ab+ac`. For example:
`3(x + 2)=3x + 6`
The opposite of distribution is factoring where we go backward. For example:
`3x + 3y = 3(x + y)`
In an expression like `6s + 6t + 6w`, the 6s, 6t and 6w are called terms. Like terms are terms with like variables THAT HAVE THE SAME EXPONENT!
You can collect like terms, for example:
`6y + 2y` is the same as `8y` and `4x^3 + 5x^3` is the same as `9x^3`
Try these 2 links from purplemath.com, this one for distribution and this one for factoring.
Intro to Algebra: Chapter 1-3 continued
See yesterday’s post (Day 5). Don’t forget that we worked on worksheet 1.2 in class and it is due tomorrow.