$\sqrt{17} + \sqrt{47}$

Correct answer marked below

8

11

Correct

12

15

32

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Comments

LilianaJun 7

Is this question mean to ask, what option is the closest to the answer to this questions?

TraJun 19

The question should ask the approximate value or the closest value. It's 10.9788 to be exact, not 11.

What this question tests

Your handling of square and higher roots, including simplifying radicals.

Forgetting the ± when taking a square root to solve an equation, or assuming √(a²) = a.

17+47\sqrt{17} + \sqrt{47}17​+47​