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Mathematics, 09.09.2019 21:10 trinwaring

Consider the arithmetic series -6+1+8+15+
find the least number of terms so that the sum of the series is greater than 1.
i tried to solve this problem, however, i come to the point when i have this expression:
\frac{19n+7n^{2} }{2}\ \textgreater \ 1\\7n^2-{19n} -2 \ \textgreater \ 0
it can't be solved because of an insane answer.
!

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Answers: 2

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Consider the arithmetic series -6+1+8+15+
find the least number of terms so that the sum of th...
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