Answer my book got to this problem is 4/a+b Problem is 4a-ab/a^2-b^2
K karigarza New member Joined Feb 13, 2010 Messages 2 Feb 13, 2010 #1 Answer my book got to this problem is 4/a+b Problem is 4a-ab/a^2-b^2
W wjm11 Senior Member Joined Nov 13, 2004 Messages 1,417 Feb 13, 2010 #2 Answer my book got to this problem is 4/a+b Problem is 4a-ab/a^2-b^2 Click to expand... I suspect you have misstated the problem. Is it actually (4a - 4b)/(a^2 - b^2)? If so, the bottom can be factored (see "difference of two squares"), and you will find a similar factor on top, which will cancel.
Answer my book got to this problem is 4/a+b Problem is 4a-ab/a^2-b^2 Click to expand... I suspect you have misstated the problem. Is it actually (4a - 4b)/(a^2 - b^2)? If so, the bottom can be factored (see "difference of two squares"), and you will find a similar factor on top, which will cancel.
