if Tn = n square + 4 and Tn=20 find the value of n
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Tn= n²+ 4= 20
or n² = 16
or n= ±4
But n cannot be negative so n=4
or n² = 16
or n= ±4
But n cannot be negative so n=4
Answered by
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n^2 + 4. = 20
n^2. = 20-4=16
n^2=16
n=±4
n^2. = 20-4=16
n^2=16
n=±4
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