Answer:
[tex]3\sqrt{5}[/tex]
Step-by-step explanation:
Factor out a [tex]\sqrt{5}[/tex] from the [tex]\sqrt{80}[/tex], and you will get [tex]\sqrt{5} * \sqrt{16}[/tex]
Then you get: [tex]4\sqrt{5}[/tex], since the square root of 16 is just 4. Then we have this expression:
[tex]4\sqrt{5} -\sqrt{5}[/tex], which gives us [tex]3\sqrt{5}[/tex].
Hope this helps
