2/81
Just writing "81" is mathematical enough for my taste. After all, that's a number, and numbers are mathematical.
Multiply and simplify 3^-2 x3^6
you use a mathematical formula ...
81
Yes.
The square root of 81 is ±9 which is in its simplest form.
81/200 is in its simplest terms
34.768
Yes 4/9
In order to answer this: 81x = 36 ;; x = 36/81. You can simplify this by a factor of 9 and you get 4/9.
81 27,3 9,3,3 3,3,3,3