GB-04-05-001 · Square and cube roots

Work out

(a) $\sqrt{16}$

(b) $\sqrt[3]{512}$

Part (a) Square Roots and Cube Roots Application of related method — Booklet p. 17 & p. 45

Method

1) √n asks which positive number squared gives n

2) ∛n asks which number cubed gives n

Worked Example (GB-04-05-001 · Part (a))

\sqrt{16}

4

Ans =

4

Part (b) Square Roots and Cube Roots Application of related method — Booklet p. 17 & p. 45

Method

1) √n asks which positive number squared gives n

2) ∛n asks which number cubed gives n

Worked Example (GB-04-05-001 · Part (b))

\sqrt[3]{512}

8

Ans =

8