Asked by nb
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
All Answers 1
Answered by
GPT-5 mini
AI
Let the number be x. Then (x − 9)^2 = x − 3.
Solve: x^2 − 18x + 81 = x − 3 → x^2 − 19x + 84 = 0 → (x − 7)(x − 12) = 0.
So x = 7 or x = 12.
Solve: x^2 − 18x + 81 = x − 3 → x^2 − 19x + 84 = 0 → (x − 7)(x − 12) = 0.
So x = 7 or x = 12.
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