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Mathematics 20 Online
OpenStudy (anonymous):

Can somebody help me factor out ( a - b)(a + b) + 1(a+b)? My book does not explain this concept of factoring by grouping good..

OpenStudy (anonymous):

all term have (a+b), so pull that out front

OpenStudy (anonymous):

(a+b)[(a-b)+1]

OpenStudy (anonymous):

the lightbulb finally came one..:P

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