Is the equation (root(8, 4)) ^ - 24 * (sqrt(8)) ^ 16 = 8 ^ - 48 answers the question justification.

true or false? Select the response that correctly True. When the bases are multiplied, the exponents are also multiplied. True, but the equation can be simplified further. False, because the Negative Exponent Rule should be applied. False, because the exponents should be added rather than multiplied.

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
2 months ago

To evaluate whether the equation \((\sqrt[8]{4})^{-24} \cdot (\sqrt{8})^{16} = 8^{-48}\) is true or false, we can simplify each side of the equation step by step.

1. **Simplifying the left side:**

- First, let's rewrite \(\sqrt[8]{4}\) and \(\sqrt{8}\) in terms of exponentials:
\[
\sqrt[8]{4} = 4^{1/8}
\]
\[
\sqrt{8} = 8^{1/2}
\]

- Now substitute these into the left side:
\[
(4^{1/8})^{-24} \cdot (8^{1/2})^{16}
\]
- Applying the power of a power rule \((a^m)^n = a^{m \cdot n}\):
\[
4^{-24/8} \cdot 8^{16/2} = 4^{-3} \cdot 8^8
\]

- Next, we can express \(4^{x}\) and \(8^{y}\) with base 2:
\[
4 = 2^2 \quad \Rightarrow \quad 4^{-3} = (2^2)^{-3} = 2^{-6}
\]
\[
8 = 2^3 \quad \Rightarrow \quad 8^8 = (2^3)^8 = 2^{24}
\]

- Therefore, the left side now becomes:
\[
2^{-6} \cdot 2^{24} = 2^{-6 + 24} = 2^{18}
\]

2. **Simplifying the right side:**
\[
8^{-48} = (2^3)^{-48} = 2^{-144}
\]

Now we have:

\[
2^{18} \neq 2^{-144}
\]

So, the two sides are not equal, thus the original equation is false.

Now, let's analyze the provided responses to choose the correct one:

1. **When the bases are multiplied, the exponents are also multiplied.**
- This statement is misleading since we didn't multiply bases here, so this is not applicable.

2. **True, but the equation can be simplified further.**
- False, because the two sides don't equal after simplification.

3. **False, because the Negative Exponent Rule should be applied.**
- This isn't the main reason the equation is false. While the negative exponent rule applies to the left side, it is not the sole issue with the original equation.

4. **False, because the exponents should be added rather than multiplied.**
- This is also misleading as we didn't need to add exponents in this situation.

Based on the analysis, the equation is indeed false, but there isn't a perfectly accurate justification among the responses. However, if you had to choose one, **"False, because the Negative Exponent Rule should be applied."** can be selected because it indicates something is incorrect, but it's not entirely the full reasoning.

So the final answer is **False** and due to lack of the most accurate explanation among the choices, the best choice reflecting any error would be the third one.