The sum of the number and its squre is nine times the next hihest number. Find it
1 answer:
Answer:
9
Explanation:
n + n2 = 9 (n + 1)
9 + 92 = 9 (9+1) (of course, that '92' means '9 squared')
9 + 81 = 9 (10)
90 = 90
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