Could someone please help me with the question using another simpler method

Could someone please help me with the question using another simpler method Example17 The mean of 5 observations is 4.4 and their variance is 8.24. If three of
the observations are l, 2 and 6, find the other two observations.
Solution Let the other two observations be x and y.
Therefore, the series is l, 2, 6, x, y.