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square root of 3 plus the cube root of 15

3 answers

sqrt3 + sqrt15
sqrt3 + sqrt3*5
sqrt3 + sqrt3 *sqrt5
sqrt3(1+sqrt5)

but it's square root of 3 plus CUBE root of 15..
i don't think you can add a square root and a cube root together..

explain please?

sorry, you are correct, I erred in reading it.

I don't see a common factor.

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