Question

What is 3 root of 72 ?

A.
9 3 root of 2

B.
3 3 root of 9

C.
2 3 root of 9

D.
9 3 root of 3

Answer 1

C, because:
3√(72) = 3√(8•9)
= 3√(8) • 3√(9)
= 2 • 3√(9)