-81100

Rewrite 81100 as 81100.

-81100

Rewrite 81 as 92.

-92100

Pull terms out from under the radical, assuming positive real numbers.

-9100

-9100

Rewrite 100 as 102.

-9102

Pull terms out from under the radical, assuming positive real numbers.

-910

-910

The result can be shown in multiple forms.

Exact Form:

-910

Decimal Form:

-0.9

Simplify – square root of 81/100