9/n+7n=8/2

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Solution for 9/n+7n=8/2 equation: 


D( n )

n = 0

n = 0

n = 0

n in (-oo:0) U (0:+oo)

7*n+9/n = 8/2 // - 8/2

7*n+9/n-(8/2) = 0

7*n+9/n-4 = 0

7*n^1+9*n^-1-4*n^0 = 0

(7*n^2-4*n^1+9*n^0)/(n^1) = 0 // * n^2

n^1*(7*n^2-4*n^1+9*n^0) = 0

n^1

7*n^2-4*n+9 = 0

7*n^2-4*n+9 = 0

DELTA = (-4)^2-(4*7*9)

DELTA = -236

DELTA < 0

n in { } 

n belongs to the empty set

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