Oh, what a happy little question! Let's paint a picture with numbers. If we take the square root of 81, we find that 9 times 9 equals 81. So, the two numbers that equal 81 are 9 and 9. Just like two little trees standing tall together in a beautiful meadow.
1 x 81 3 x 27 9 x 9
3 * 27
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)
1 and 81 Those two numbers certainly divide into 81 though they are not the only numbers to do so.
They are: 9 times 9 = 81
2.4115 and 33.5885 (to 4 dp)
1 x 243, 3 x 81, 9 x 27
1 x 6561, 3 x 2187, 9 x 729, 27 x 243, 81 x 81.
79 and 2 if you add them.
1 x 81, 3 x 27, 9 x 9.
81 = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.
1 x 81, 3 x 27, 9 x 9