Question

PLEASE HELP! It’s super important!

Answer 1

2. a. - 1

b.

`- (2)/(3)`

3. a. 4

b. 6

Explanation:

`2. \: a. \: \sqrt[3]{ - 1}`

`= \sqrt[3]{( - 1 )* ( - 1 )*( - 1)}`

= -1 (Ans)

`b. \: \sqrt[3]{ - (8)/(27) }`

Since,

`\sqrt[3]{ - x} = - \sqrt[3]{x}`

Hence,

`= - \sqrt[3]{ (8)/(27) }`

`= - \sqrt[3]{ (2 * 2 * 2)/(3 * 3 * 3) }`

`= - (2)/(3) (ans)`

`3. \: a. \: 10 - 2 √(9)`

`= 10 - 2 √(3 * 3)`

= 10 - 2 × 3

= 10 - 6

= 4 (Ans)

`b. \: 70 - {( \sqrt[3]{64} )}^(3)`

`= 70 - \sqrt[3]{ {64}^(3) }`

`= 70 - \sqrt[3]{64 * 64 * 64}`

= 70 - 64

= 6 (Ans)