243
3 & 27
You have a few choices: > 1 and 81 > 3 and 27 > 9 and 9 > 3 and 3 and 3
162
Factors are numbers you can multiply together to get another number. 81: 1, 3, 9, 27, 81
Multiply and simplify 3^-2 x3^6
The numbers that add to get 6 and multiply to get 81 are 3 and 3.
These: 1 x 81, 3 x 27, 9 x 9
1 x 81, 3 x 27, 9 x 9.
For each term, multiply the previous by -3. So, 27*-3=-81. -81 is the next term.
162
Multiply each term by 3 to get the next one.