Find the numerical equivalent of 9^9 x 9^−6

Answer 1

To simplify the expression 9^9 x 9^−6, we can use the rule of exponents that states a^m x a^n = a^(m+n).

In this case, we have 9^9 x 9^−6, so we can rewrite it as 9^(9+(-6)).

9^(9+(-6)) = 9^3

Now, we calculate 9^3:

9^3 = 9 x 9 x 9 = 729

Therefore, the numerical equivalent of 9^9 x 9^−6 is 729.