That looks simple enough for me; but if you want to factor it, you can use the formula for the difference of two squares.
Use exponents to simplify. Since there are four a's, you can write this as: a4.
2/81
Multiply and simplify 3^-2 x3^6
81 27,3 9,3,3 3,3,3,3
81
Yes.
The square root of 81 is ±9 which is in its simplest form.
a4 x a8 = a22 x a23 = a25
81/200 is in its simplest terms
a2/a6 = 1/a4
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.