The expression equivalent to 9^-2 is 1/81.
We have to multiply the given number as many times as the radical is. Now if the radical has a positive value, we can keep the answer as it is. If it has a negative value, then the answer is reciprocal to the number.
The expression 9^-2 is given.
We can simplify the given expression as follows:
9^-2 = 1/9^2 ( This is done because the radical has a negative value )
= 1/81
This is the expression equivalent to the given expression.
Therefore, we have found the value of the expression which is equivalent to the given expression 9^-2 as 1/81.
Learn more about radicals here: https://brainly.com/question/1601861
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