March 27, 2017

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(10x - 1)^2
Does it = 100x + 1

  • math - ,

    Memorizing the following identities will help you with similar problems:

    Now put a=10x, b=1 and apply to (a-b)^2
    (10x - 1)^2
    =(10x)^2 -2(10x*))+(1)^2

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