Question

How do you simplify `-sqrt(1089)`?

Answer 1

`-sqrt1089=-33`

Explanation:

As `1089` is divisible by `9` (sum of digits divisible by `9`)

and quotient is `121=11xx11`

Hence

`-sqrt1089=-sqrt(ul(3xx3)xxul(11xx11))`

= `-3xx11=-33`