You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.
9+9 = 18.
9 to the power of 3 (9^3) = 729
3^9 is equal to 19,683.
9^3 = 729
9^3=729
81 3² x 3² = 9 x 9
3^9 = 19,683 Which is the same as 3x3x3x3x3x3x3x3x3 = 19,683
-32 equals 9
32 = 3 x 3 = 9
9
-9
(-3)2 = -3 x -3 = 9 - 32 = - 3 x 3 = -9
9 3 to the power of 2 can be written 32, which is 3 squared, or 3 times 3.