The sum of (x+3)observations is (x²*²-81). Find the mean of the observations.
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If u substitute x=4
Then Sum is 175
And no.of observation is 7
Mean =175/7
=25
Then Sum is 175
And no.of observation is 7
Mean =175/7
=25
kishu17:
hey its aswer is (x-3)(x²+9)
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