Question

Which of the following are square root of the number below? Check all that apply.

81

Answer 1

A, B, D, E

Explanation:

`√(81)` = ± 9 → D and E

Since 9 × 9 = 81 and - 9 × - 9 = 81

`81^{(1)/(2) }` =
`√(81)` = 9 → B

-
`81^{(1)/(2) }` = -
`√(81)` = - 9 → A