Question

Simplify... pic above^

Answer 1

Answer: ⇒ last options d. 16√5

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Step-by-step explanation:

First you had to add similar elements.

$13\sqrt{5}+3\sqrt{5}=16\sqrt{5}$

$=16\sqrt{5}$

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Answer 2

$13\sqrt5+3\sqrt5=(13+3)\sqrt5=16\sqrt5$