Question
Ask by Nguyen Conner. in China
Jan 23,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
该表达式的值为 -9。
Solution
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Beyond the Answer
To simplify the expression
Therefore, our expression becomes:
Next, we find
Now, we calculate
We also know that
To find
Now substituting these into:
From
We already have:
Then, we can also simplify:
So now substituting back into the expression:
We take
After simplifications, through careful manipulation, we find:
This simplifies to yield a final value:
Thus, we can conclude:
