Math Question
![Marina correctly simplified the expression \( \frac{-4 a^{-2} b^{4}}{8 a^{-6} b^{-5}} \), assuming that \( a=0 \) and \( b=0 \). Her simplified expression is below.
\[
-\frac{1}{2} a^{4} b^{\square}
\]
What exponent should Marina use for b?
\( -7 \)
\( -1 \)
1
7](https://d3hlidq5bf9vg0.cloudfront.net/app-server-student/2022/4/15/458dea48-319d-461a-a1e5-8740cb8ed030.jpg "Marina correctly simplified the expression \( \frac{-4 a^{-2} b^{4}}{8 a^{-6} b^{-5}} \), assuming that \( a=0 \) and \( b=0 \). Her simplified expression is below.
\[
-\frac{1}{2} a^{4} b^{\square}
\]
What exponent should Marina use for b?
\( -7 \)
\( -1 \)
1
7")
Solution
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