Find the indicated real nth root(s) of a.

n = 3, a = -64

(a)  

• 3

Find the indicated real nth root(s) of a.

n = 2, a = 81

• 9

• 5

• -5

• 0

• not a real number

  (undefined)

• about 3.2%

• about 4.7%

• about 2.3%
• about 1.6%