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The sum of all the values of ' m ' for w...

The sum of all the values of `' m '` for which the roots `x_1, x_2` of quadratic equation `x^2-2m x+m=0` satisfy `(x_1)^3 ​ +(x_2)^3 ​ =(x_1)^2 ​ +(x_2)^ 2` is 1. `3/4` 2. `4/3` 3. `9/4` 4. `5/4`

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