Question

multiply (6+ sqrt 5)(4-2 sqrt 5)
24-2 sqrt 5
14-8 sqrt 5
24-10 sqrt 5
14-16 sqrt 5

Answer 1

14-8sqrt5

Answer 2

=24-12sqr5+4sqr5-10=14-8sqr5

Answer 3

\[(6+\sqrt{5)}(4-2\sqrt{5)}\]
\[24-12\sqrt{5}+4\sqrt{5}-10\]
\[14-8\sqrt{5}\]