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Evaluate the expression:

[tex]\[ \left(-\frac{1}{2}\right)^4 = \][/tex]


Sagot :

To solve the expression [tex]\(\left(-\frac{1}{2}\right)^4\)[/tex], we need to raise the base [tex]\(\left(-\frac{1}{2}\right)\)[/tex] to the power of 4. Here are the detailed steps:

1. Base and Exponent Identification:
- The base is [tex]\(-\frac{1}{2}\)[/tex].
- The exponent is 4.

2. Understanding the Exponentiation:
- When raising a fraction to a power, both the numerator and the denominator are raised to that power.
- Additionally, since the exponent is even, any negative sign in the base will be eliminated because a negative number raised to an even power results in a positive number.

3. Raise the Numerator to the Power:
- The numerator of the base is [tex]\(-1\)[/tex].
- [tex]\((-1)^4 = (-1) \times (-1) \times (-1) \times (-1) = 1\)[/tex].

4. Raise the Denominator to the Power:
- The denominator of the base is [tex]\(2\)[/tex].
- [tex]\(2^4 = 2 \times 2 \times 2 \times 2 = 16\)[/tex].

5. Combine the Results:
- Combine the results from the numerator and the denominator:
[tex]\[ \left(-\frac{1}{2}\right)^4 = \frac{(-1)^4}{2^4} = \frac{1}{16}. \][/tex]

6. Simplify the Result:
- The fraction [tex]\(\frac{1}{16}\)[/tex] is in its simplest form.

So, the value of [tex]\(\left(-\frac{1}{2}\right)^4\)[/tex] is [tex]\(\boxed{0.0625}\)[/tex].