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Surds

\sqrt{n} = c\sqrt{r}

Coefficient (c)6

Radicand (r)2

Fully simplified?No

3/√b rationalised3√5 / 5

n (under the root)72

Denominator (b) for 3/√b5

Set n = 72 and confirm √72 simplifies to 6√2
Find a value of n that is already fully simplified (like a prime number)
Set n = 50 and confirm √50 simplifies to 5√2
Set n = 12 and confirm √12 simplifies to 2√3
Set the denominator to 5 and confirm 3/√5 rationalises to 3√5/5