(6√5)/√3 since the index is the same and both numbers are positive, we can write
= 6(√5/3) multiply inside the radical by 3/3 to make the denominator a perfect square number
= 6(√15/9)
= (6/3)√15
= 2√15
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5/9 OR 0.5 repeating.. here's how: "radical 5 over 3" times "radical 5 over 3" (because squaring means to multiply a number by itself) is "radical 25 over 9". this is not complete: the square root of "25" is "5" so the final answer is 5/9. "5" divided by "9" is "0.5 repeating".
4 radical 3 is about 6.92820323