SOLUTION: For some reason I am drawing a complete blank on how to begin this: Can you add sqrt(5) + sqrt(20)? Hint: simplify the sqrt(20) to a multiple of sqrt(5). Also need an example of

Question 592147: For some reason I am drawing a complete blank on how to begin this:
Can you add sqrt(5) + sqrt(20)? Hint: simplify the sqrt(20) to a multiple of sqrt(5). Also need an example of a radical expression for others to solve.
I would greatly appreciate any help. It's been 34 years since I have had Algebra.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!

we can remove perfect squares from inside the radical:

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