n2*(n-1)/2=552

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Solution for n2*(n-1)/2=552 equation: 



n2(n-1)/2=552

We move all terms to the left:

n2(n-1)/2-(552)=0

We multiply all the terms by the denominator


n2(n-1)-552*2=0

We add all the numbers together, and all the variables

n2(n-1)-1104=0

We multiply parentheses

n^3-1n^2-1104=0

We do not support enpression: n^3

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