To solve the equation \( xx - 9 = 15 \), let's first rewrite it correctly. Assuming "xx" means \( x^2 \), the equation becomes:
\[ x^2 - 9 = 15 \]
Now, let's simplify the equation:
- Add 9 to both sides:
\[ x^2 = 15 + 9 \]
\[ x^2 = 24 \]
- Now, take the square root of both sides:
\[ x = \pm \sqrt{24} \]
We can simplify \( \sqrt{24} \):
\[ \sqrt{24} = \sqrt{4 \cdot 6} = 2 \sqrt{6} \]
So the solutions are:
\[ x = 2 \sqrt{6} \quad \text{and} \quad x = -2 \sqrt{6} \]
Thus, the possible solutions in approximate decimal form are \( x \approx 4.899 \) and \( x \approx -4.899 \).
Since the options listed (x = 24, x = 6, x = -24, x = -6) do not match our results, it appears there was a misinterpretation of "xx." If there is any correction or more details, please provide!
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