Deleon Flynn
03/21/2024 · Junior High School
Which expressions is equivalent to \( \left(\frac{\frac{1}{2} m\left(4 d^{2} m^{3}\right)}{8 d^{4} m^{-2} g^{4}}\right)^{-2} \) ?
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Tutor-Verified Answer
Step-by-step Solution
To simplify the expression \( \left(\frac{\frac{1}{2} m\left(4 d^{2} m^{3}\right)}{8 d^{4} m^{-2} g^{4}}\right)^{-2} \), we will first simplify the fraction inside the parentheses.
1. **Simplify the numerator:**
\[
\frac{1}{2} m (4 d^2 m^3) = \frac{1}{2} \cdot 4 \cdot m \cdot d^2 \cdot m^3 = 2 m^{1+3} d^2 = 2 m^4 d^2
\]
2. **Simplify the denominator:**
\[
8 d^4 m^{-2} g^4
\]
3. **Combine the numerator and denominator:**
\[
\frac{2 m^4 d^2}{8 d^4 m^{-2} g^4}
\]
4. **Simplify the fraction:**
- The coefficient simplifies as follows:
\[
\frac{2}{8} = \frac{1}{4}
\]
- For the \(d\) terms:
\[
\frac{d^2}{d^4} = d^{2-4} = d^{-2}
\]
- For the \(m\) terms:
\[
\frac{m^4}{m^{-2}} = m^{4 - (-2)} = m^{4 + 2} = m^6
\]
Putting it all together, we have:
\[
\frac{2 m^4 d^2}{8 d^4 m^{-2} g^4} = \frac{1}{4} m^6 d^{-2} g^{-4}
\]
5. **Now, we need to raise this to the power of \(-2\):**
\[
\left(\frac{1}{4} m^6 d^{-2} g^{-4}\right)^{-2}
\]
6. **Apply the exponent to each part:**
- The coefficient:
\[
\left(\frac{1}{4}\right)^{-2} = 4^2 = 16
\]
- The \(m\) term:
\[
(m^6)^{-2} = m^{-12}
\]
- The \(d\) term:
\[
(d^{-2})^{-2} = d^{4}
\]
- The \(g\) term:
\[
(g^{-4})^{-2} = g^{8}
\]
7. **Combine all parts:**
\[
16 m^{-12} d^{4} g^{8}
\]
Thus, the expression \( \left(\frac{\frac{1}{2} m\left(4 d^{2} m^{3}\right)}{8 d^{4} m^{-2} g^{4}}\right)^{-2} \) simplifies to:
\[
\boxed{16 d^4 g^8 m^{-12}}
\]
Quick Answer
The expression simplifies to \( 16 d^4 g^8 m^{-12} \).
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