Math

how do you factor 9x squared -36x+36

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  1. It's 81. 9x9=81. 81-36=65. 65+36=81

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  2. first take out a common factor of 9 which leaves you with

    9(x^2 - 4x + 4) , the bracket is a perfect square, so....

    9(x-2)^2

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  3. Simplify and state the restrisctions on the variables.

    4/mn * m/2

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