using the ||| identity solve (3/2m+2/3n)(3/2m-2/3n)
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19
Using (a+b)*(a-b) = a^2 - b^2
(3/2+2/3)*(3/2-2/3) = 3/2^2 - 2/3^2
= 9/4 - 4/9
= 81/36 - 16/36
= 65/36
(3/2+2/3)*(3/2-2/3) = 3/2^2 - 2/3^2
= 9/4 - 4/9
= 81/36 - 16/36
= 65/36
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11
See the attached file
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