forestcove
Nov 7, 2009, 09:12 AM
How do I work 9g-rm-9m+rg
Unknown008
Nov 7, 2009, 10:40 AM
Do you have to factorise?
Group what you see are similar in any two terms.
For example, if you had ab + because + cd, you could see that the first two have be in common, or the last two have c in common. Two different ways are:
b(a+c) + cd --or-- ab + c(b+d)
Try doing the same for your question.