Question

-√48b square root 4

Answer 1

If you mean: -[(square root 48)*(square root b)*(square root 4)], then you get the following solution:

-[(square root 16)*(square root 3)*(square root b)*(square root 4)]
-[(4)(2)*square root (3b)] = -8[square root (3b)]

Answer 2

\[-8 \sqrt{3} \sqrt{b} \]