asked 95.7k views
5 votes
Diego says that if you cube the number 4 and then take the cube root of the result, you end up with 8. Is diego correct?

asked
User Saomi
by
7.8k points

1 Answer

4 votes

Consider the cube of the number 4,


4^3 = 4 * 4 * 4 = 64

Now, we have to take the cube root of the result obtained which is 64.

So,
(64)^(1)/(3) = (4 * 4 * 4)^(1)/(3)


(64)^(1)/(3) = (4^3)^(1)/(3)


(64)^(1)/(3) = (4)^{3 * (1)/(3)}


(64)^(1)/(3) = 4

Therefore, the cube root of 64 is 4.

But Diego evaluated the result as 8, which is incorrect.

Therefore, Diego is incorrect.

answered
User Arslan Asim
by
7.9k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.