You have a few choices:
> 1 and 81
> 3 and 27
> 9 and 9
> 3 and 3 and 3
9 x 9 = 81 :(
81
1 x 81, 3 x 27, 9 x 9.
These: 1 x 81, 3 x 27, 9 x 9
-9 and -9 multiply to get 81. ■
There are no two real numbers that will add to -9 and multiply to 81. Using complex numbers, the two numbers are: (-9/2 + i9/2√3) and (-9/2 - i9/2√3)
They are: 9 times 9 = 81
Factors are numbers you can multiply together to get another number. 81: 1, 3, 9, 27, 81
1 x 729, 3 x 243, 9 x 81, 27 x 27
9 x 9 = 81 :(
2.4115 and 33.5885 (to 4 dp)
3 & 27
81
They are: 2 times 81 = 162
162
1 x 81, 3 x 27, 9 x 9.
These: 1 x 81, 3 x 27, 9 x 9