12 radical 2
No.
radical 89 cannot be simplified.
3 radical 5
-48 simplified is -48.
radical(48)/radical(3) = radical(48/3) = radical(16) = 4 Technically, radical(16) is +4 OR -4 but in such questions often only the principal root is required.
4 radical 6
48 does not need to be put in radical form. But, it can be: √2304
6 radical 6
√97, which cannot be simplified.
There is no radical to simplify!
2 radical(8) = 4 radical(2)