Which of the following is an equivalent expression to (2−3 ⋅93)−429 ⋅9−10 with only positive exponents, generated by applying the Properties of Integer Exponents?(1 point)

Responses

23 ⋅92
2 cubed times 9 squared

2392
Start Fraction 2 cubed over 9 squared end fraction

212⋅9−1229⋅9−10
Start fraction 2 superscript 12 baseline times 9 superscript negative 12 baseline over 2 superscript 9 baseline times 9 superscript negative 10 baseline end fraction

2−7⋅9−129⋅9−10

1 answer

To simplify the expression \((2−3 \cdot 93)−429 \cdot 9−10\) with positive exponents, let's break it down step by step using the properties of exponents.

  1. We rewrite the expression, separating terms: \[ (2^{-3} \cdot 9^3)^{-4} \cdot 9^{-10} \]

  2. Apply the power of a power property \((a^m)^n = a^{m \cdot n}\): \[ (2^{-3})^{-4} \cdot (9^3)^{-4} \cdot 9^{-10} \] This simplifies to: \[ 2^{12} \cdot 9^{-12} \cdot 9^{-10} \]

  3. Combine the powers of \(9\) using the property \(a^m \cdot a^n = a^{m+n}\): \[ 2^{12} \cdot 9^{-12 - 10} = 2^{12} \cdot 9^{-22} \]

Now, to express it with only positive exponents, we can rewrite \(9^{-22}\) as \(\frac{1}{9^{22}}\): \[ \frac{2^{12}}{9^{22}} \]

So, looking at the options provided, this results in the equivalent expression: \[ \frac{2^{12}}{9^{22}} \]

Thus, the correct response is: \[ \text{Start Fraction 2 cubed over 9 squared end fraction} \] is not accurate. However, based on the work above, none of the listed options precisely match.

Among the provided options, it appears none lists \(2^{12}/9^{22}\) or something functionally equivalent, as \(2^3/9^2\) and the others do not represent our simplified form accurately. Please check if any options may have been mistyped or overlooked.