Is $- \sqrt{54}$ $-sqrt54$ a rational or irrational number?

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Answer 1 · 2015-07-13T23:09:20

It's irrational.

$\sqrt{54} = \sqrt{6 \cdot 9} = 3 \sqrt{6}$ $sqrt54=sqrt(6*9)=3sqrt6$

$\sqrt{6}$ $sqrt6$ cannot be resolved further, so there is no ratio to express $\sqrt{6}$ $sqrt6$ .

Is −√54-sqrt54 a rational or irrational number?