How do you simplify $2sqrt5 + 4sqrt5$ ?

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Answer 1 · 2016-07-21T04:58:28

6 $\sqrt5$

You can see it this way: $2\sqrt5=\sqrt5+\sqrt5$ while $4\sqrt5=\sqrt5+\sqrt5+\sqrt5+\sqrt5$
Adding both together, you get $6\sqrt5$

How do you simplify 2sqrt5 + 4sqrt5 2sqrt5 + 4sqrt5 ?