Question

4sqrt{2}-6sqrt{8}
__how do i simplify this radical expression

Answer 1

same as before noting that
\[8=4\times 2\] so
\[\sqrt{8}=2\sqrt{2}\]

Answer 2

that answer s wrong

Answer 3

4sqrt{2}-6sqrt{8}=4sqrt{2}-6sqrt{2x4}=
4sqrt{2}-6sqrt{2}xsqrt{4}=
4sqrt{2}-6xsqrt{2}x2=
4sqrt{2}-12sqrt{2}=-8sqrt{2}