Question

se A =Raiz 81 e B= raiz 49 então a.b séra​

Answer 1

achando as raízes:

√81 * √49 = 9 * 7

9 * 7 = 63

Answer 2

$\sqrt{81 } = 9 . \sqrt{49} = 7 \: \\ 9 . 7 = 63$