algebra

posted by .

So... I know the answer to the question because it's something we worked on in class... but there's one part I don't get.

Factoring

m - 2n + m^2 - 4n^2

m - 2n + (m + 2n) (m - 2n)

Then there's a 1...

1(m - 2n) (m + 2n) (m - 2n)

AND my question is...
How and why does this 1 go over here and do this from the step above?? ...

(m - 2n) (1 + m + 2n)

And the answer somehow is

(m - 2n) (1 + m + 2n)


m - 2n + (m + 2n) (m - 2n)
(m - 2n) + (m + 2n) (m - 2n)
This is like
a + b a
a(1+b) where a is m-2n and b is m+2n

  • algebra -

    good

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    how do I help my son answer this question/ cary spent 1/3 of his class working on fraction problems and 3/6 of his class working on algebra problems. He spent the last 10 minutes of his class reading a chapter in his textbook. How …
  2. Algebra

    I have one more question I need to ask about algebra, this one is a perform the indicated operation question. 4x 5x ----- - ---- x^2-9 x^2+4x-+3 I am really confused on the -+3 part, I don't know if my teacher made a typo or what, …
  3. Sally

    I have a factoring question; what is 8a^2-8a-30?
  4. Algebra

    Hi! I have a few questions about Factoring Quadratic Expressions. My first one is 12x^2+x=6. How would you facor that?
  5. math algebra

    Part 1: Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring and why?
  6. Math/algebra class

    You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class …
  7. Algebra Question

    When I'm factoring ax^2 + bx + c, is it fine to switch signs in the factoring answer?
  8. Algebra 2

    Hey, I don't understand this question I have honestly done this question about a good 3 times but never seemed to get the right answer. Please Help!!! Solve each equation by factoring. Check your answers. 7x^2=21x
  9. English

    There are 7 classes for first year students. Each class is composed of about 30 students. Emily is a student of Class 1-2. One of his classmates who went to the same elementary school asks: Which class are you in?
  10. English

    At school, he learns 10 subjects such as math, science, social studies, computers, ethics, etc. He is in math class now. He has a cell phone. He is sitting at the back. One of his friends calls him and asked "Which class are you in?

More Similar Questions