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Thread: Help with this domain of intergers thing

  1. #1
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    Unhappy Help with this domain of intergers thing

    Hi, I would help with question 1.5. I don't know what exactly to do for it. It's practice questions and I wanna be ready for the real thing.Help with this domain of intergers thing-img_20171126_233027_576.jpg
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  2. #2
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    Re: Help with this domain of intergers thing

    $a^2b + a b^2 + a^2 - b^2 -(a+b)$

    $(a-1)(b^2 + a +a b + b)$

    $(a-1)(b+1)(a+b)$
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