n(n+1)(2n+13)-420=0

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Solution for n(n+1)(2n+13)-420=0 equation: 



n(n+1)(2n+13)-420=0

We multiply parentheses ..

n(+2n^2+13n+2n+13)-420=0

We multiply parentheses

2n^3+13n^2+2n^2+13n-420=0

We do not support enpression: n^3

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