The square of 9 less than a number is 3 less than the number. What is the number?

-12 or 7

-12 or - 7

- 7 or 12

7 or 12

Question

3 November, 03:59

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Answers (1)

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Eve Snow · Answer 1

Let the number be x, then (x - 9) ^2 = x - 3

x^2 - 18x + 81 = x - 3

x^2 - 19x + 84 = 0

(x - 12) (x - 7) = 0

x = 12 or 7

The square of 9 less than a number is 3 less than the number. What is the number?-12 or 7-12 or - 7- 7 or 127 or 12