6.2 Practice (Evaluating nth roots)

Find the indicated real n^th root(s) of a.

n = 4, a = 256

• -4

• 4

• ±4

• no real roots

Find the indicated real n^th root(s) of a.

n = 5 , a = -243

• 3

• -3

• ±3

• no real roots

125^2/3

• 5

• 25

• 75

• 5

8^5/3

• 64

• 32

• 16

• 24

64^4/3

• 256

• 8

• 8⁴

• 2

4^5/2

• 10

• 16

• 32

• 64