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aksik [14]
3 years ago
7

I'm not sure how to answer b.

Mathematics
1 answer:
Brrunno [24]3 years ago
5 0

If you want to check whether a cube root is correct, simply cube your solution and see if you get back the number under the radical. In this case, we can check that \sqrt[3]{-512} =-8 by cubing -8, getting us

(-8)^3=(-8)\cdot(-8)\cdot(-8)=64\cdot(-8)=-512

Our check checks out!

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