Question

Simplify 5√112

A) 80√7
B) 9√7
C) 20√7
D) 4√7

Answer 1

\[112=16\times 7\] so
\[\sqrt{112}=\sqrt{16\times 7}=\sqrt{16}\times \sqrt{7}=4\times \sqrt{7}\]

Answer 2

therefore you get
\[20\sqrt{7}\]

Answer 3

i thank C