Results 1 to 4 of 4

Math Help - Taking a minus sign as a factor.

  1. #1
    Newbie
    Joined
    Oct 2011
    Posts
    2

    Taking a minus sign as a factor.

    (2-a)(2+a)=-(a-2)(2-a)
    Or
    (2-a)(2+a)=-[(a-2)(2-a)]
    Or
    (2-a)(2+a)=-(a-2)*-(2-a)

    Which of these would be correct?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,698
    Thanks
    454

    Re: Taking a minus sign as a factor.

    Quote Originally Posted by Beetle View Post
    (2-a)(2+a)=-(a-2)(2-a)
    Or
    (2-a)(2+a)=-[(a-2)(2-a)]
    Or
    (2-a)(2+a)=-(a-2)*-(2-a)

    Which of these would be correct?
    none are correct.

    (2-a)(2+a) = -(a-2)(2+a)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2011
    Posts
    2

    Re: Taking a minus sign as a factor.

    (2-a)(2+a)=-[(a-2)(-2-a)]
    Or
    (2-a)(2+a)=-(a-2)*-(-2-a)

    What about this?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,698
    Thanks
    454

    Re: Taking a minus sign as a factor.

    Quote Originally Posted by Beetle View Post
    (2-a)(2+a)=-[(a-2)(-2-a)]
    Or
    (2-a)(2+a)=-(a-2)*-(-2-a)

    What about this?
    seems like you're guessing here.

    check by substituting a value in for a to see if the factorization works.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Difference between plus minus and minus plus
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: December 23rd 2011, 04:14 AM
  2. Replies: 4
    Last Post: October 6th 2011, 05:51 PM
  3. How to force unary minus (negative sign)?
    Posted in the LaTeX Help Forum
    Replies: 7
    Last Post: July 30th 2009, 05:04 AM
  4. Congruences: stumped by minus sign
    Posted in the Number Theory Forum
    Replies: 3
    Last Post: May 3rd 2009, 12:57 PM
  5. phi(x/2) and w(x) minus pi(x)=???
    Posted in the Number Theory Forum
    Replies: 0
    Last Post: April 7th 2009, 03:30 AM

Search Tags


/mathhelpforum @mathhelpforum