Question

If n(n+1)=30 ,then the n =?​

Answer 1

${\large\blue{\mathbb\fcolorbox{aqua}{darkblue}{● QUESTION:}}}$

❥︎ ɪғ n(n+1) = 30, ᴛʜᴇɴ ᴛʜᴇ n = ?

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${\large\blue{\mathbb\fcolorbox{aqua}{darkblue}{● ANSWER:}}}$

❥︎ ɪᴛ ɪs ɢɪᴠᴇɴ ᴛʜᴀᴛ:

n(n+1) = 30

n² + n = 30

n² + n - 30 = 0

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