The average of non-zero number and its square is 5 times the number. The number

Question

The average of non-zero number and its square is 5 times the number. The number is:

Options:

A . 9

B . 17

C . 29

D . 295

Answer: Option A

Let the number be x. Then, (x + x²)/2 = 5x
=> x² - 9x = 0=> x(x - 9) = 0=> x = 0 or x = 9So, the number is 9.

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