When m is the value, the domain of F (x) = (MX ^ 2 + 4x + m + 2) ^ - 3 / 4 + (x ^ 2-mx + 1) is r
After sorting out, it is not difficult to see that MX ^ 2 + 4x + m + 2 is on the denominator, so MX ^ 2 + 4x + m + 2 is not equal to 0, and MX ^ 2 + 4x + m + 2 is greater than 0 because of the fourth power
In conclusion, MX ^ 2 + 4x + m + 2 is greater than 0
Then M is greater than 0 and the discriminant is less than 0
The solution m belongs to (- 1 + radical 5, positive infinity)
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