166k views
1 vote
Need to simplify cube roots, work shown would be great!

Cube root of 81
Cube root of -64

User Yanery
by
8.3k points

2 Answers

4 votes
1.) 4.32
2.)-4
copy the work on square root calculator

User Mohnkuchenzentrale
by
8.6k points
2 votes

81=9^2=(3^2)^2=3^4\implies \sqrt[3]{81}=\sqrt[3]{3^4}=\sqrt[3]{3*3^3}=3\sqrt[3]3


-64=(-4)^3\implies\sqrt[3]{-64}=\sqrt[3]{(-4)^3}=-4
User Mikewaters
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories