simplify 3\sqrt{8}+3\sqrt{2}

To simplify, first factor out the perfect squares from the square roots:

3√8 = 3√(4*2) = 3*2√2 = 6√2

3√2 remains unchanged

So the simplified form of 3√8 + 3√2 is:

6√2 + 3√2 = 9√2