Question

under root 81 raise to power minus 2

Answer 1

$\sqrt{81} ^ {-2} = 9^{-2}$
$= \frac{1}{9^{2}}$
$= \frac{1}{81}$

hope this helps!

Answer 2

√81 ²  =   ((3)^4)^1/2


Actually we can write √x = x^1/2 hence 1/2 Is  there.....

Final answer - 3^4/2= 3^2 = 9......ANSWER

hope it helps

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