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4 October, 09:35

Factor 121m^2-198m+81

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  1. 4 October, 10:32
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    1) Rewrite it in the form a^2-2ab+b^2, where a=11m and b=9

    (11m) ^2-2 (11m) (9) + 9^2

    2) Use Square of Difference: (a-b) ^2=a^2-2ab+b^2

    (11m-9) ^2

    Your answer is (11m-9) ^2
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