Algebra HELP!
posted by KG
Factor each of the following expressions completely and then simplify, if possible:
a: ax + 2x
b: ax  2x
c: 3x  4x + 7x
d: 3x^2 + xy  x
e: (a + b)(c + 1)  (a + b)
f: x^2  9y^2
g: (x^2  y^2) + x + y

Steve
No ideas on any of them?
Look for groupings of like expressions, difference of two squares, etc.
For example, (g) is
(x^2y^2) + x + y
(xy)(x+y) + (x+y)
(xy+1)(x+y) 
KG
I still don't understand how you got that though, factoring is my major weakness. I don't get how you get the answers to them.
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