Question
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Answer
Solution
Let’s substitute the given values into the expression:
-
Substitute
, , and into : -
Simplify by handling the subtraction of a negative:
-
Perform the arithmetic:
Thus, the value of
is
.
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Bonus Knowledge
First, let’s plug in the values:
,
, and
. The expression becomes
. Remember that subtracting a negative is like adding a positive, so it simplifies to
.
Now, calculate:
, and then
. Therefore,
.