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Math Help - Help with simplifying an equation

  1. #1
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    Help with simplifying an equation

    Hello,

    I am wondering how this equation got from here:

    (y^3)(y + 1) - (y + 1) = 0

    to here:

    (y + 1)(y^3 - 1) = 0

    and what any relevant tips/rules might be. Thanks.
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  2. #2
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    Quote Originally Posted by NachoNacho View Post
    Hello,

    I am wondering how this equation got from here:

    (y^3)(y + 1) - (y + 1) = 0

    to here:

    (y + 1)(y^3 - 1) = 0

    and what any relevant tips/rules might be. Thanks.
    (y^3)(y + 1) - {\color{red}1} (y + 1) = 0
    (y + 1) is common to each term on the left. Factorise in the usual way.
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