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03-09-2020
Spanish

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The sum of the number and its squre is nine times the next hihest number. Find it

Respuesta :

MisterBigBrain MisterBigBrain

03-09-2020

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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