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11 January, 07:54

Simplify (4m - 5n) ^2

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  1. 11 January, 11:09
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    16m^2-40mn+25n^2

    Step-by-step explanation:

    This is using (a-b) ^2 = a^2-2ab+b^2

    Now if you replace a with 4m and b with 5n you will get 16m^2-40mn+25n^2
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