n^2=9n-90

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Solution for n^2=9n-90 equation: 



n^2=9n-90

We move all terms to the left:

n^2-(9n-90)=0

We get rid of parentheses

n^2-9n+90=0

a = 1; b = -9; c = +90;
Δ = b2-4ac
Δ = -92-4·1·90
Δ = -279
Delta is less than zero, so there is no solution for the equation

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