Question 168536: 2ax-2bx+ay-by
Answer by midwood_trail(310)   (Show Source):
You can put this solution on YOUR website! 2ax-2bx+ay-by
I assume you want to factor.
When you have 4 terms, it is best to factor by groups.
2ax - 2bx = group 1
ay - by = group 2
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2ax - 2bx = 2x( a - b)
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ay - by = y(a - b)
Do you see the quantity (a - b)?
We only need one of them.
Final answer: (2x + y)(a - b)
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