Question

using prime factorization find the square root of 81

Answer 1

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

Answer 2

yo!!!!


Factors of 81 are....
1, 3, 9, 27, 81.
Prime factorization of 81 = 3× 3 × 3 × 3 which can also be written 3⁴. Since √81 = 9, a whole number, 81 is a perfect square. Even though it has other factors, the only multiplication fact we use is 9 × 9 = 81.