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zhuklara [117]
3 years ago
15

21 over root 6 rationalised

Mathematics
2 answers:
Mkey [24]3 years ago
8 0

Answer:

\frac{7\sqrt{6}}{2}

Step-by-step explanation:

To rationalize the denominator, all you have to do is multiply the top and bottom by √6:

\frac{21}{\sqrt{6}}\cdot\frac{\sqrt{6}}{\sqrt{6}} = \frac{21\sqrt{6}}{6}

You can further simplify by dividing the top and bottom by 3:

\frac{7\sqrt{6}}{2}

I hope this helped.

valentina_108 [34]3 years ago
3 0

Answer:

Step-by-step explanation:

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