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2016-03-19T15:02:22+08:00

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It is when you distribute the addends of one of the factors.
ex.
6×10=(4×10)+(2×10)
don't get fooled! Just because it has quantities doesn't mean it is already associative! 
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2016-03-21T13:53:12+08:00
it is when you distribute the addends of one of the factors.
ex.
5(x+5)+25(x-1)
we need to distribute this before answering.
=5x+25+25x-25
*combine the like terms
*note:folow the integers rule
=30x+0 or 30x
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