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23 October, 14:23

How do you verify factoring is correct?

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  1. 23 October, 16:34
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    Multiply the factors together. You should get the original expression.

    For example, if we are to factor

    2x^2 + 4x

    we would factor as

    2x (x + 2).

    Check this by multiplying back in

    2x*x + 2x*2 = 2x^2 + 4x

    which is what we started with, so we know we are correct.
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