Question

Find the value of 4√(81)-²

Answer 1

Answer:

$4 \sqrt{81} {}^{ - 2} \\ = 4 \sqrt({ \frac{1}{81} }) {}^{2} \\ = 4( \frac{1}{9}) {}^{2} \\ = 4 \times \frac{1}{81} \\ = \frac{4}{81}$

Hey! Mate Here is the answer. Thanks