Question

What is="absmiddle" class="latex-formula">
​

Answer 1

Answer:

$\: \sqrt{81 } = 9$

Step-by-step explanation:

$\sqrt{81 } = \sqrt{3 \times 3 \times 3 \times 3} \\ = 3 \times 3 \\ =9$

You have to prime factorise 81 and then you will get 9 as the answer.

Answer 2

Answer:

9

Step-by-step explanation:

9 x 9 = 81