Question

how does 3sqrt8 = 2 ?

Answer 1

\[2\times 2\times 2=2^3=8\]

Answer 2

its the cube root

Answer 3

wouldn't sqrt of 8 have to = 2/3?

Answer 4

oh I see

Answer 5

\[\sqrt{8}=\sqrt{4\times 2}=2\sqrt{2}\]

Answer 6

\[\sqrt[3]{8}=\sqrt[3]{2^3}=2\], take note that \[\sqrt[3]{x^3}=x\] for any number x. Basically, the cube root "undoes" the cube exponent. So if you cube 2, then take the cube root, you'll get back 2 as an answer.

Answer 7

thank u