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Is the trick here to simplify each root first? I started doing that but then got stuck on what to do with the coefficients.
Wait, can someone explain why we can't just add 98 and 72 and take the root of the sum? I keep getting one of the answer choices that way lol
omg same, I fell for it the first time too
Simplified both and got a common radical term, then just added the outside numbers. Pretty quick once you see it.
Decent 500-level question. Nothing too crazy if you know your perfect squares up to like 15.
What it tests
Your handling of square and higher roots, including simplifying radicals.
Common trap
Forgetting the ± when taking a square root to solve an equation, or assuming √(a²) = a.